# Changelog

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
Any violations of this scheme are considered to be bugs.

## [Unreleased]

[unreleased]: https://github.com/hashie/hashie/compare/v5.0.0...master

### Added

* [#569](https://github.com/hashie/hashie/pull/569): Added support for Rails 7 - [@aflansburg](https://github.com/aflansburg).
* Your contribution here.

### Changed

* [#571](https://github.com/hashie/hashie/pull/571): Test with Ruby 3.2 - [@petergoldstein](https://github.com/petergoldstein).
* [#558](https://github.com/hashie/hashie/pull/558): Test with Ruby 3.1 - [@petergoldstein](https://github.com/petergoldstein).
* Your contribution here.

### Deprecated

* Your contribution here.

### Removed

* Your contribution here.

### Fixed

* Your contribution here.

### Security

* Your contribution here.

## [5.0.0] - 2021-11-08

[5.0.0]: https://github.com/hashie/hashie/compare/v4.1.0...v5.0.0

### Added

* [#523](https://github.com/hashie/hashie/pull/523): Added TOC, ensure a keep-a-changelog formatted CHANGELOG - [@dblock](https://github.com/dblock).
* [#522](https://github.com/hashie/hashie/pull/522): Added eierlegende Wollmilchsau mascot graphic - [@carolineartz](https://github.com/carolineartz).
* [#530](https://github.com/hashie/hashie/pull/530): Added Hashie::Extensions::Dash::PredefinedValues - [@caalberts](https://github.com/caalberts).
* [#536](https://github.com/hashie/hashie/pull/536): Added exporting a normal Hash from an indifferent one through the `#to_hash` method - [@michaelherold](https://github.com/michaelherold).
* [#539](https://github.com/hashie/hashie/pull/539): Run 2.7 tests once - [@anakinj](https://github.com/anakinj).

### Changed

* [#521](https://github.com/hashie/hashie/pull/499): Do not convert keys that cannot be represented as symbols to `String` in `Mash` initialization - [@carolineartz](https://github.com/carolineartz).
* [#524](https://github.com/hashie/hashie/pull/524): Test with Ruby 2.7 - [@aried3r](https://github.com/aried3r).
* [#525](https://github.com/hashie/hashie/pull/525): Use `indifferent_writer` in `IndifferentAccess#convert!` - [@yogeshjain999](https://github.com/yogeshjain999).
* [#527](https://github.com/hashie/hashie/pull/527): Updated Copyright to (c) 2009-2020 Intridea, Inc., and Contributors - [@dblock](https://github.com/dblock).
* [#555](https://github.com/hashie/hashie/pull/555): Test with Ruby 3.0 - [@dblock](https://github.com/dblock).

### Removed

* [#538](https://github.com/hashie/hashie/pull/538): Dropped testing for JRuby 9.0, though not support - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#516](https://github.com/hashie/hashie/issues/516): Fixed `NoMethodError` raised when including `Hashie::Extensions::Mash::SymbolizeKeys` and `Hashie::Extensions::SymbolizeKeys` in mashes/hashes with non string or symbol keys - [@carolineartz](https://github.com/carolineartz).
* [#531](https://github.com/hashie/hashie/pull/531): Fixed [slice doesn't work using symbols](https://github.com/hashie/hashie/issues/529) using hash with `IndifferentAccess` extension - [@gnomex](https://github.com/gnomex).
* [#533](https://github.com/hashie/hashie/pull/533): Fixed `NoMethodError: undefined method 'to_json'` at `hashie/dash_spec` - [@gnomex](https://github.com/gnomex).
* [#535](https://github.com/hashie/hashie/pull/535): Restored the exporting of all properties as part of `Dash#to_h` and `Dash#to_hash` - [@michaelherold](https://github.com/michaelherold).
* [#537](https://github.com/hashie/hashie/pull/537): Fixed inconsistencies with handling defaults in `Dash` with and without `IgnoreUnclared` mixed in - [@michaelherold](https://github.com/michaelherold).
* [#547](https://github.com/hashie/hashie/pull/547): Fixed issue where a source hash key can be used in translating multiple properties - [@danwa5](https://github.com/danwa5).

## [4.1.0] - 2020-02-01

[4.1.0]: https://github.com/hashie/hashie/compare/v4.0.0...v4.1.0

### Added

* [#545](https://github.com/hashie/hashie/pull/545): Add `Hashie::Mash#except` and `Hashie::Extensions::IndifferentAccess#except` when running under Ruby 3 to match newly added Ruby stdlib method - [@jackjennings](https://github.com/jackjennings).
* [#499](https://github.com/hashie/hashie/pull/499): Add `Hashie::Extensions::Mash::PermissiveRespondTo` to make specific subclasses of Mash fully respond to messages for use with `SimpleDelegator` - [@michaelherold](https://github.com/michaelherold).

### Changed

* [#498](https://github.com/hashie/hashie/pull/498): Exclude tests from the gem release to reduce installation size and improve installation speed - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#467](https://github.com/intridea/hashie/pull/467): Fixed `DeepMerge#deep_merge` mutating nested values within the receiver - [@michaelherold](https://github.com/michaelherold).
* [#505](https://github.com/hashie/hashie/pull/505): Ensure that `Hashie::Array`s are not deconverted within `Hashie::Mash`es to make `Mash#dig` work properly - [@michaelherold](https://github.com/michaelherold).
* [#507](https://github.com/hashie/hashie/pull/507): Suppress `Psych.safe_load` arg warn when using Psych 3.1.0+ - [@koic](https://github.com/koic).
* [#508](https://github.com/hashie/hashie/pull/508): Fixed `Mash.load` no longer uses Rails-only `#except` - [@bobbymcwho](https://github.com/bobbymcwho).
* [#508](https://github.com/hashie/hashie/pull/508): Fixed `Hashie::Extensions::DeepMerge` `#deep_merge` not correctly dup'ing sub-hashes if active_support hash extensions were not present - [@bobbymcwho](https://github.com/bobbymcwho).
* [#500](https://github.com/hashie/hashie/pull/500): Do not warn when setting Mash keys that look like underbang, bang, and query methods - [@michaelherold](https://github.com/michaelherold).
* [#510](https://github.com/hashie/hashie/pull/510): Ensure that `Hashie::Mash#compact` is only defined on Ruby version >= 2.4.0 - [@bobbymcwho](https://github.com/bobbymcwho).
* [#511](https://github.com/hashie/hashie/pull/511): Suppress keyword arguments warning for Ruby 2.7.0 - [@koic](https://github.com/koic).
* [#512](https://github.com/hashie/hashie/pull/512): Suppress an integer unification warning for using Ruby 2.4.0+ - [@koic](https://github.com/koic).
* [#513](https://github.com/hashie/hashie/pull/513): Suppress a Ruby's warning when using Ruby 2.6.0+ - [@koic](https://github.com/koic).

## [4.0.0] - 2019-10-30

[4.0.0]: https://github.com/hashie/hashie/compare/v3.6.0...v4.0.0

### Added

* [#323](https://github.com/hashie/hashie/pull/323): Added `Hashie::Extensions::Mash::DefineAccessors` - [@marshall-lee](https://github.com/marshall-lee).
* [#474](https://github.com/hashie/hashie/pull/474): Expose `YAML#safe_load` options in `Mash#load` - [@riouruma](https://github.com/riouruma), [@dblock](https://github.com/dblock).
* [#478](https://github.com/hashie/hashie/pull/478): Added optional array parameter to `Hashie::Mash.disable_warnings` - [@bobbymcwho](https://github.com/bobbymcwho).
* [#481](https://github.com/hashie/hashie/pull/481): Ruby 2.6 - Support `Hash#merge` and `#merge!` called with multiple Hashes/Mashes - [@bobbymcwho](https://github.com/bobbymcwho).
* [#488](https://github.com/hashie/hashie/pull/488): Added ability to create an anonymous `Hashie::Mash` subclass with key conflict errors silenced using `Hashie::Mash.quiet.new` - [@bobbymcwho](https://github.com/bobbymcwho).

### Changed

* [#481](https://github.com/hashie/hashie/pull/481): Implement non-destructive standard Hash methods - [@bobbymcwho](https://github.com/bobbymcwho).
* [#482](https://github.com/hashie/hashie/pull/482): Update Travis configs to make jruby builds run on trusty dist - [@BobbyMcWho](https://github.com/BobbyMcWho).

### Fixed

* [#459](https://github.com/hashie/hashie/pull/459): Fixed a regression in `Mash.load` that disallowed aliases - [@arekt](https://github.com/arekt) and [@michaelherold](https://github.com/michaelherold).
* [#465](https://github.com/hashie/hashie/pull/465): Fixed `deep_update` to call any readers when a key exists - [@laertispappas](https://github.com/laertispappas).
* [#479](https://github.com/hashie/hashie/pull/479): Fixed an issue with `Hash#except` not returning a `Mash` in Rails 6 - [@bobbymcwho](https://github.com/bobbymcwho).
* [#489](https://github.com/hashie/hashie/pull/489): Updated the documentation to exlain the behavior of `Mash` and keyword arguments - [@Bhacaz](https://github.com/Bhacaz).
* [#465](https://github.com/hashie/hashie/pull/465): Clean up our RuboCop configuration and fix the outstanding line length violations. This involved some minor refactoring on `Hashie::Extensions::Coercion`, `Hashie::Extensions::Dash::IndifferentAccess`, `Hashie::Extensions::DeepLocate`, `Hashie::Extensions::Mash::SafeAssignment`, and `Hashie::Hash`, but none that were detectable via the test suite - [@michaelherold](https://github.com/michaelherold).

## [3.6.0] - 2018-08-13

[3.6.0]: https://github.com/hashie/hashie/compare/v3.5.7...v3.6.0

### Added

* [#455](https://github.com/hashie/hashie/pull/455): Allow overriding methods when passing in a hash - [@lnestor](https://github.com/lnestor).
* [#434](https://github.com/hashie/hashie/pull/434): Add documentation around Mash sub-Hashes - [@michaelherold](https://github.com/michaelherold).
* [#439](https://github.com/hashie/hashie/pull/439): Add an integration spec for Elasticsearch - [@michaelherold](https://github.com/michaelherold).

### Changed

* [#433](https://github.com/hashie/hashie/pull/433): Update Rubocop to the most recent version - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#435](https://github.com/hashie/hashie/pull/435): Mash `default_proc`s are now propagated down to nested sub-Hashes - [@michaelherold](https://github.com/michaelherold).
* [#436](https://github.com/hashie/hashie/pull/436): Ensure that `Hashie::Extensions::IndifferentAccess` injects itself after a non-destructive merge - [@michaelherold](https://github.com/michaelherold).
* [#437](https://github.com/hashie/hashie/pull/437): Allow codependent properties to be set on Dash - [@michaelherold](https://github.com/michaelherold).
* [#438](https://github.com/hashie/hashie/pull/438): Fix: `NameError (uninitialized constant Hashie::Extensions::Parsers::YamlErbParser::Pathname)` in `Hashie::Mash.load` - [@onk](https://github.com/onk).
* [#457](https://github.com/hashie/hashie/pull/457): Fix `Trash` to allow it to copy properties from other properties - [@michaelherold](https://github.com/michaelherold).

## [3.5.7] - 2017-12-19

[3.5.7]: https://github.com/hashie/hashie/compare/v3.5.6...v3.5.7

### Fixed

* [#430](https://github.com/hashie/hashie/pull/430): Fix Hashie::Rash randomly losing items - [@Antti](https://github.com/Antti).

### Changed

* [#425](https://github.com/hashie/hashie/pull/425): Update rubies in CI - [@kachick](https://github.com/kachick).

## [3.5.6] - 2017-07-12

[3.5.6]: https://github.com/hashie/hashie/compare/v3.5.5...v3.5.6

### Fixed

* [#416](https://github.com/hashie/hashie/pull/416): Fix `warning: instance variable @disable_warnings not initialized` - [@axfcampos](https://github.com/axfcampos).

## [3.5.5] - 2017-02-24

[3.5.5]: https://github.com/hashie/hashie/compare/v3.5.4...v3.5.5

### Added

* [#326](https://github.com/hashie/hashie/pull/326): Added `Hashie::Extensions::Mash::KeepOriginalKeys` to give Mashes the ability to keep the original structure given to it - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#415](https://github.com/hashie/hashie/pull/415): Fixed Mash logging keys multiple times which lead to a bad user experience or, in some cases, errors - [@michaelherold](https://github.com/michaelherold).

## [3.5.4] - 2017-02-22

[3.5.4]: https://github.com/hashie/hashie/compare/v3.5.3...v3.5.4

### Added

* [#412](https://github.com/hashie/hashie/pull/412): Added a Hashie::Extensions::Mash::SymbolizeKeys extension that overrides the default stringification behavior for keys - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#409](https://github.com/hashie/hashie/pull/409): Fixed Railtie detection for projects where Rails is defined but Railties are not available - [@CallumD](https://github.com/callumd).
* [#411](https://github.com/hashie/hashie/pull/411): Fixed a performance regression from 3.4.3 that caused a 10x slowdown in OmniAuth - [@michaelherold](https://github.com/michaelherold).

## [3.5.3] - 2017-02-11

[3.5.3]: https://github.com/hashie/hashie/compare/v3.5.2...v3.5.3

### Fixed

* [#402](https://github.com/hashie/hashie/pull/402): Use a Railtie to set Hashie.logger on rails boot - [@matthewrudy](https://github.com/matthewrudy).
* [#406](https://github.com/hashie/hashie/pull/406): Ensure that subclasses that disable warnings propagate that setting to grandchild classes - [@michaelherold](https://github.com/michaelherold).
* Your contribution here.

## [3.5.2] - 2017-02-10

[3.5.2]: https://github.com/hashie/hashie/compare/v3.5.1...v3.5.2

### Added

* [#395](https://github.com/hashie/hashie/pull/395): Add the ability to disable warnings in Mash subclasses - [@michaelherold](https://github.com/michaelherold).
* [#400](https://github.com/hashie/hashie/pull/400): Fix Hashie.logger load and set the Hashie logger to the Rails logger in a Rails environment - [@michaelherold](https://github.com/michaelherold).
* [#397](https://github.com/hashie/hashie/pull/397): Add the integration specs harness into the main test tasks - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#396](https://github.com/hashie/hashie/pull/396): Fix for specs in #381: Incorrect use of shared context meant example was not being run - [@biinari](https://github.com/biinari).
* [#399](https://github.com/hashie/hashie/pull/399): Fix passing Pathname object to Hashie::Mesh.load() - [@albb0920](https://github.com/albb0920).

## [3.5.1] - 2017-01-31

* [#392](https://github.com/hashie/hashie/pull/392): Fix for #391: Require all dependencies of Hashie::Mash - [@dblock](https://github.com/dblock).

[3.5.1]: https://github.com/hashie/hashie/compare/v3.5.0...v3.5.1

## [3.5.0] - 2017-01-31

* [#386](https://github.com/hashie/hashie/pull/386): Fix for #385: Make `deep_merge` always `deep_dup` nested hashes before merging them in so that there are no shared references between the two hashes being merged. - [@mltsy](https://github.com/mltsy).
* [#389](https://github.com/hashie/hashie/pull/389): Support Ruby 2.4.0 - [@camelmasa](https://github.com/camelmasa).

[3.5.0]: https://github.com/hashie/hashie/compare/v3.4.6...v3.5.0

### Added

* [#381](https://github.com/hashie/hashie/pull/381): Add a logging layer that lets us report potential issues to our users. As the first logged issue, report when a `Hashie::Mash` is attempting to overwrite a built-in method, since that is one of our number one questions - [@michaelherold](https://github.com/michaelherold).

### Changed

* [#384](https://github.com/hashie/hashie/pull/384): Updated to CodeClimate 1.x - [@boffbowsh](https://github.com/boffbowsh).

### Fixed

* [#369](https://github.com/hashie/hashie/pull/369): If a translation for a property exists when using IndifferentAccess and IgnoreUndeclared, use the translation to find the property - [@whitethunder](https://github.com/whitethunder).
* [#376](https://github.com/hashie/hashie/pull/376): Leave string index unchanged if it can't be converted to integer for Array#dig - [@sazor](https://github.com/sazor).
* [#377](https://github.com/hashie/hashie/pull/377): Dont use Rubygems to check ruby version - [@sazor](https://github.com/sazor).
* [#378](https://github.com/hashie/hashie/pull/378): Deep find all searches inside all nested hashes - [@sazor](https://github.com/sazor).
* [#380](https://github.com/hashie/hashie/pull/380): Evaluate procs default values of Dash in object initialization - [@sazor](https://github.com/sazor).
* [#387](https://github.com/hashie/hashie/pull/387): Fixed builds failing due to Rake 11 having a breaking change - [@michaelherold](https://github.com/michaelherold).

## [3.4.6] - 2016-09-16

[3.4.6]: https://github.com/hashie/hashie/compare/v3.4.5...v3.4.6

### Fixed

* [#368](https://github.com/hashie/hashie/pull/368): Since `hashie/mash` can be required alone, require its dependencies - [@jrafanie](https://github.com/jrafanie).

## [3.4.5] - 2016-09-16

[3.4.5]: https://github.com/hashie/hashie/compare/v3.4.4...v3.4.5

### Added

* [#337](https://github.com/hashie/hashie/pull/337), [#331](https://github.com/hashie/hashie/issues/331): `Hashie::Mash#load` accepts a `Pathname` object - [@gipcompany](https://github.com/gipcompany).
* [#366](https://github.com/hashie/hashie/pull/366): Added Danger, PR linter - [@dblock](https://github.com/dblock).

### Deprecated

* [#366](https://github.com/hashie/hashie/pull/366): Hashie is no longer tested on Ruby < 2 - [@dblock](https://github.com/dblock).

### Fixed

* [#358](https://github.com/hashie/hashie/pull/358): Fixed support for Array#dig - [@modosc](https://github.com/modosc).
* [#365](https://github.com/hashie/hashie/pull/365): Ensured ActiveSupport::HashWithIndifferentAccess is defined before use in #deep_locate  - [@mikejarema](https://github.com/mikejarema).

## [3.4.4] - 2016-04-29

[3.4.4]: https://github.com/hashie/hashie/compare/v3.4.3...v3.4.4

### Added

* [#349](https://github.com/hashie/hashie/pull/349): Convert `Hashie::Mash#dig` arguments for Ruby 2.3.0 - [@k0kubun](https://github.com/k0kubun).

### Fixed

* [#240](https://github.com/hashie/hashie/pull/240): Fixed nesting twice with Clash keys - [@bartoszkopinski](https://github.com/bartoszkopinski).
* [#317](https://github.com/hashie/hashie/pull/317): Ensured `Hashie::Extensions::MethodQuery` methods return boolean values - [@michaelherold](https://github.com/michaelherold).
* [#319](https://github.com/hashie/hashie/pull/319): Fixed a regression from 3.4.1 where `Hashie::Extensions::DeepFind` is no longer indifference-aware - [@michaelherold](https://github.com/michaelherold).
* [#322](https://github.com/hashie/hashie/pull/322): Fixed `reverse_merge` issue with `Mash` subclasses - [@marshall-lee](https://github.com/marshall-lee).
* [#346](https://github.com/hashie/hashie/pull/346): Fixed `merge` breaking indifferent access - [@docwhat](https://github.com/docwhat), [@michaelherold](https://github.com/michaelherold).
* [#350](https://github.com/hashie/hashie/pull/350): Fixed from string translations used with `IgnoreUndeclared` - [@marshall-lee](https://github.com/marshall-lee).

## [3.4.3] - 2015-10-25

[3.4.3]: https://github.com/hashie/hashie/compare/v3.4.2...v3.4.3

### Added

* [#306](https://github.com/hashie/hashie/pull/306): Added `Hashie::Extensions::Dash::Coercion` - [@marshall-lee](https://github.com/marshall-lee).
* [#314](https://github.com/hashie/hashie/pull/314): Added a `StrictKeyAccess` extension that will raise an error whenever a key is accessed that does not exist in the hash - [@pboling](https://github.com/pboling).

### Fixed

* [#304](https://github.com/hashie/hashie/pull/304): Ensured compatibility of `Hash` extensions with singleton objects - [@regexident](https://github.com/regexident).
* [#310](https://github.com/hashie/hashie/pull/310): Fixed `Hashie::Extensions::SafeAssignment` bug with private methods - [@marshall-lee](https://github.com/marshall-lee).

### Changed

* [#313](https://github.com/hashie/hashie/pull/313): Restrict pending spec to only Ruby versions 2.2.0-2.2.2 - [@pboling](https://github.com/pboling).
* [#315](https://github.com/hashie/hashie/pull/315): Default `bin/` scripts: `console` and `setup` - [@pboling](https://github.com/pboling).

## [3.4.2] - 2015-06-02

[3.4.2]: https://github.com/hashie/hashie/compare/v3.4.1...v3.4.2

### Added

* [#297](https://github.com/hashie/hashie/pull/297): Extracted `Trash`'s behavior into a new `Dash::PropertyTranslation` extension - [@michaelherold](https://github.com/michaelherold).

### Removed

* [#292](https://github.com/hashie/hashie/pull/292): Removed `Mash#id` and `Mash#type` - [@jrochkind](https://github.com/jrochkind).

## [3.4.1] - 2015-03-31

[3.4.1]: https://github.com/hashie/hashie/compare/v3.4.0...v3.4.1

### Added

* [#269](https://github.com/hashie/hashie/pull/272): Added Hashie::Extensions::DeepLocate - [@msievers](https://github.com/msievers).
* [#281](https://github.com/hashie/hashie/pull/281): Added #reverse_merge to Mash to override ActiveSupport's version - [@mgold](https://github.com/mgold).

### Fixed

* [#270](https://github.com/hashie/hashie/pull/277): Fixed ArgumentError raised when using IndifferentAccess and HashWithIndifferentAccess - [@gardenofwine](https://github.com/gardenofwine).
* [#282](https://github.com/hashie/hashie/pull/282): Fixed coercions in a subclass accumulating in the superclass - [@maxlinc](https://github.com/maxlinc), [@martinstreicher](https://github.com/martinstreicher).

## [3.4.0] - 2015-02-02

[3.4.0]: https://github.com/hashie/hashie/compare/v3.3.2...v3.4.0

### Added

* [#251](https://github.com/hashie/hashie/pull/251): Added block support to indifferent access #fetch - [@jgraichen](https://github.com/jgraichen).
* [#252](https://github.com/hashie/hashie/pull/252): Added support for conditionally required Hashie::Dash attributes - [@ccashwell](https://github.com/ccashwell).
* [#254](https://github.com/hashie/hashie/pull/254): Added public utility methods for stringify and symbolize keys - [@maxlinc](https://github.com/maxlinc).
* [#260](https://github.com/hashie/hashie/pull/260): Added block support to Extensions::DeepMerge - [@galathius](https://github.com/galathius).
* [#271](https://github.com/hashie/hashie/pull/271): Added ability to define defaults based on current hash - [@gregory](https://github.com/gregory).

### Changed

* [#249](https://github.com/hashie/hashie/pull/249): SafeAssignment will now also protect hash-style assignments - [@jrochkind](https://github.com/jrochkind).
* [#264](https://github.com/hashie/hashie/pull/264): Methods such as abc? return true/false with Hashie::Extensions::MethodReader - [@Zloy](https://github.com/Zloy).

### Fixed

* [#247](https://github.com/hashie/hashie/pull/247): Fixed #stringify_keys and #symbolize_keys collision with ActiveSupport - [@bartoszkopinski](https://github.com/bartoszkopinski).
* [#256](https://github.com/hashie/hashie/pull/256): Inherited key coercions - [@Erol](https://github.com/Erol).
* [#259](https://github.com/hashie/hashie/pull/259): Fixed handling of default proc values in Mash - [@Erol](https://github.com/Erol).
* [#261](https://github.com/hashie/hashie/pull/261): Fixed bug where Dash.property modifies argument object - [@d-tw](https://github.com/d-tw).
* [#269](https://github.com/hashie/hashie/pull/269): Added #extractable_options? so ActiveSupport Array#extract_options! can extract it - [@ridiculous](https://github.com/ridiculous).

## [3.3.2] - 2014-11-26

[3.3.2]: https://github.com/hashie/hashie/compare/v3.3.1...v3.3.2

### Added

* [#231](https://github.com/hashie/hashie/pull/231): Added support for coercion on class type that inherit from Hash - [@gregory](https://github.com/gregory).
* [#233](https://github.com/hashie/hashie/pull/233): Custom error messages for required properties in Hashie::Dash subclasses - [@joss](https://github.com/joss).
* [#245](https://github.com/hashie/hashie/pull/245): Added Hashie::Extensions::MethodAccessWithOverride to autoloads - [@Fritzinger](https://github.com/Fritzinger).

### Fixed

* [#221](https://github.com/hashie/hashie/pull/221): Reduced amount of allocated objects on calls with suffixes in Hashie::Mash - [@kubum](https://github.com/kubum).
* [#224](https://github.com/hashie/hashie/pull/224): Merging Hashie::Mash now correctly only calls the block on duplicate values - [@amysutedja](https://github.com/amysutedja).
* [#228](https://github.com/hashie/hashie/pull/228): Made Hashie::Extensions::Parsers::YamlErbParser pass template filename to ERB - [@jperville](https://github.com/jperville).

## [3.3.1] - 2014-08-26

[3.3.1]: https://github.com/hashie/hashie/compare/v3.3.0...v3.3.1

### Added

* [#183](https://github.com/hashie/hashie/pull/183): Added Mash#load with YAML file support - [@gregory](https://github.com/gregory).
* [#189](https://github.com/hashie/hashie/pull/189): Added Rash#fetch - [@medcat](https://github.com/medcat).
* [#204](https://github.com/hashie/hashie/pull/204): Added Hashie::Extensions::MethodOverridingWriter and MethodAccessWithOverride - [@michaelherold](https://github.com/michaelherold).
* [#205](https://github.com/hashie/hashie/pull/205): Added Hashie::Extensions::Mash::SafeAssignment - [@michaelherold](https://github.com/michaelherold).
* [#209](https://github.com/hashie/hashie/pull/209): Added Hashie::Extensions::DeepFind - [@michaelherold](https://github.com/michaelherold).

### Fixed

* [#69](https://github.com/hashie/hashie/pull/69): Fixed regression in assigning multiple properties in Hashie::Trash - [@michaelherold](https://github.com/michaelherold), [@einzige](https://github.com/einzige), [@dblock](https://github.com/dblock).
* [#195](https://github.com/hashie/hashie/pull/195): Ensured that the same object is returned after injecting IndifferentAccess - [@michaelherold](https://github.com/michaelherold).
* [#201](https://github.com/hashie/hashie/pull/201): Hashie::Trash transforms can be inherited - [@fobocaster](https://github.com/fobocaster).
* [#200](https://github.com/hashie/hashie/pull/200): Improved coercion: primitives and error handling - [@maxlinc](https://github.com/maxlinc).
* [#206](https://github.com/hashie/hashie/pull/206): Fixed stack overflow from repetitively including coercion in subclasses - [@michaelherold](https://github.com/michaelherold).
* [#207](https://github.com/hashie/hashie/pull/207): Fixed inheritance of transformations in Trash - [@fobocaster](https://github.com/fobocaster).

## [3.2.0] - 2014-07-10

[3.2.0]: https://github.com/hashie/hashie/compare/v3.1.0...v3.2.0

### Added

* [#177](https://github.com/hashie/hashie/pull/177): Added support for coercing enumerables and collections - [@gregory](https://github.com/gregory).

### Changed

* [#179](https://github.com/hashie/hashie/pull/179): Mash#values_at will convert each key before doing the lookup - [@nahiluhmot](https://github.com/nahiluhmot).
* [#184](https://github.com/hashie/hashie/pull/184): Allow ranges on Rash to match all Numeric types - [@medcat](https://github.com/medcat).

### Fixed

* [#164](https://github.com/hashie/hashie/pull/164), [#165](https://github.com/hashie/hashie/pull/165), [#166](https://github.com/hashie/hashie/pull/166): Fixed stack overflow when coercing mashes that contain ActiveSupport::HashWithIndifferentAccess values - [@numinit](https://github.com/numinit), [@kgrz](https://github.com/kgrz).
* [#187](https://github.com/hashie/hashie/pull/187): Automatically require version - [@medcat](https://github.com/medcat).
* [#190](https://github.com/hashie/hashie/issues/190): Fixed `coerce_key` with `from` Trash feature and Coercion extension - [@gregory](https://github.com/gregory).
* [#192](https://github.com/hashie/hashie/pull/192): Fixed StringifyKeys#stringify_keys! to recursively stringify keys of embedded ::Hash types - [@dblock](https://github.com/dblock).

## [3.1.0] - 2014-06-25

[3.1.0]: https://github.com/hashie/hashie/compare/v3.0.0...v3.1.0

### Added

* [#172](https://github.com/hashie/hashie/pull/172): Added Dash and Trash#update_attributes! - [@gregory](https://github.com/gregory).

### Changed

* [#169](https://github.com/hashie/hashie/pull/169): Hash#to_hash will also convert nested objects that implement to_hash - [@gregory](https://github.com/gregory).
* [#173](https://github.com/hashie/hashie/pull/173): Auto include Dash::IndifferentAccess when IndifferentAccess is included in Dash - [@gregory](https://github.com/gregory).

### Fixed

* [#171](https://github.com/hashie/hashie/pull/171): Include Trash and Dash class name when raising `NoMethodError` - [@gregory](https://github.com/gregory).
* [#174](https://github.com/hashie/hashie/pull/174): Fixed `from` and `transform_with` Trash features when IndifferentAccess is included - [@gregory](https://github.com/gregory).

## [3.0.0] - 2014-06-03

[3.0.0]: https://github.com/hashie/hashie/compare/v2.1.2...v3.0.0

### Added

* [#149](https://github.com/hashie/hashie/issues/149): Allow IgnoreUndeclared and DeepMerge to be used with undeclared properties - [@jhaesus](https://github.com/jhaesus).

### Changed

* [#152](https://github.com/hashie/hashie/pull/152): Do not convert keys to String in Hashie::Dash and Hashie::Trash, use Hashie::Extensions::Dash::IndifferentAccess to achieve backward compatible behavior - [@dblock](https://github.com/dblock).
* [#152](https://github.com/hashie/hashie/pull/152): Do not automatically stringify keys in Hashie::Hash#to_hash, pass `:stringify_keys` to achieve backward compatible behavior - [@dblock](https://github.com/dblock).

### Fixed

* [#146](https://github.com/hashie/hashie/issues/146): Mash#respond_to? inconsistent with #method_missing and does not respond to #permitted? - [@dblock](https://github.com/dblock).
* [#148](https://github.com/hashie/hashie/pull/148): Consolidated Hashie::Hash#stringify_keys implementation - [@dblock](https://github.com/dblock).
* [#159](https://github.com/hashie/hashie/pull/159): Handle nil intermediate object on deep fetch - [@stephenaument](https://github.com/stephenaument).

## [2.1.2] - 2014-05-12

[2.1.2]: https://github.com/hashie/hashie/compare/v2.1.1...v2.1.2

### Changed

* [#169](https://github.com/hashie/hashie/pull/169): Hash#to_hash will also convert nested objects that implement `to_hash` - [@gregory](https://github.com/gregory).

## [2.1.1] - 2014-04-12

[2.1.1]: https://github.com/hashie/hashie/compare/v2.1.0...v2.1.1

### Fixed

* [#131](https://github.com/hashie/hashie/pull/131): Added IgnoreUndeclared, an extension to silently ignore undeclared properties at initialization - [@righi](https://github.com/righi).
* [#138](https://github.com/hashie/hashie/pull/138): Added Hashie::Rash, a hash whose keys can be regular expressions or ranges - [@epitron](https://github.com/epitron).
* [#144](https://github.com/hashie/hashie/issues/144): Fixed regression invoking `to_hash` with no parameters - [@mbleigh](https://github.com/mbleigh).

## [2.1.0] - 2014-04-06

[2.1.0]: https://github.com/hashie/hashie/compare/v2.0.5...v2.1.0

### Added

* [#134](https://github.com/hashie/hashie/pull/134): Added deep_fetch extension for nested access - [@tylerdooling](https://github.com/tylerdooling).

### Changed

* [#89](https://github.com/hashie/hashie/issues/89): Do not respond to every method with suffix in Hashie::Mash, fixes Rails strong_parameters - [@Maxim-Filimonov](https://github.com/Maxim-Filimonov).
* Ruby style now enforced with Rubocop - [@dblock](https://github.com/dblock).

### Removed

* Removed support for Ruby 1.8.7 - [@dblock](https://github.com/dblock).
* [#136](https://github.com/hashie/hashie/issues/136): Removed Hashie::Extensions::Structure - [@markiz](https://github.com/markiz).

### Fixed

* [#69](https://github.com/hashie/hashie/issues/69): Fixed assigning multiple properties in Hashie::Trash - [@einzige](https://github.com/einzige).
* [#99](https://github.com/hashie/hashie/issues/99): Hash#deep_merge raises errors when it encounters integers - [@defsprite](https://github.com/defsprite).
* [#100](https://github.com/hashie/hashie/pull/100): IndifferentAccess#store will respect indifference - [@jrochkind](https://github.com/jrochkind).
* [#103](https://github.com/hashie/hashie/pull/103): Fixed support for Hashie::Dash properties that end in bang - [@thedavemarshall](https://github.com/thedavemarshall).
* [#107](https://github.com/hashie/hashie/pull/107): Fixed excessive value conversions, poor performance of deep merge in Hashie::Mash - [@davemitchell](https://github.com/dblock), [@dblock](https://github.com/dblock).
* [#110](https://github.com/hashie/hashie/pull/110): Correctly use Hash#default from Mash#method_missing - [@ryansouza](https://github.com/ryansouza).
* [#111](https://github.com/hashie/hashie/issues/111): Trash#translations correctly maps original to translated names - [@artm](https://github.com/artm).
* [#113](https://github.com/hashie/hashie/issues/113): Fixed Hash#merge with Hashie::Dash - [@spencer1248](https://github.com/spencer1248).
* [#120](https://github.com/hashie/hashie/pull/120): Pass options to recursive to_hash calls - [@pwillett](https://github.com/pwillett).
* [#129](https://github.com/hashie/hashie/pull/129): Added Trash#permitted_input_keys and inverse_translations - [@artm](https://github.com/artm).
* [#130](https://github.com/hashie/hashie/pull/130): IndifferentAccess now works without MergeInitializer - [@npj](https://github.com/npj).
* [#133](https://github.com/hashie/hashie/pull/133): Fixed Hash##to_hash with symbolize_keys - [@mhuggins](https://github.com/mhuggins).

## [2.0.5] - 2013-05-10

[2.0.5]: https://github.com/hashie/hashie/compare/v2.0.4...v2.0.5

### Fixed

* [#96](https://github.com/hashie/hashie/pull/96): Made coercion work better with non-symbol keys in Hashie::Mash - [@wapcaplet](https://github.com/wapcaplet).

## [2.0.4] - 2013-04-24

[2.0.4]: https://github.com/hashie/hashie/compare/v2.0.3...v2.0.4

### Fixed

* [#94](https://github.com/hashie/hashie/pull/94): Made #fetch method consistent with normal Hash - [@markiz](https://github.com/markiz).

### Changed

* [#90](https://github.com/hashie/hashie/pull/90): Various doc tweaks - [@craiglittle](https://github.com/craiglittle).

## [2.0.3] - 2013-03-18

[2.0.3]: https://github.com/hashie/hashie/compare/v2.0.2...v2.0.3

### Fixed

* [#68](https://github.com/hashie/hashie/pull/68): Fixed #replace - [@jimeh](https://github.com/jimeh).
* [#88](https://github.com/hashie/hashie/pull/88): Hashie::Mash.new(abc: true).respond_to?(:abc?) works - [@7even](https://github.com/7even).

## [2.0.2] - 2013-02-26

[2.0.2]: https://github.com/hashie/hashie/compare/v2.0.1...v2.0.2

### Fixed

* [#85](https://github.com/hashie/hashie/pull/85): Added symbolize_keys back to to_hash - [@cromulus](https://github.com/cromulus).

## [2.0.1] - 2013-02-26

[2.0.1]: https://github.com/hashie/hashie/compare/v2.0.0...v2.0.1

### Removed

* [#81](https://github.com/hashie/hashie/pull/81): Removed Mash#object_id override - [@matschaffer](https://github.com/matschaffer).
* Removed VERSION and Gemfile.lock - [@jch](https://github.com/jch), [@mbleigh](https://github.com/mbleigh).

## [2.0.0] - 2013-02-16

[2.0.0]: https://github.com/hashie/hashie/compare/v1.2.0...v2.0.0

### Added

* [#41](https://github.com/hashie/hashie/pull/41): DeepMerge extension - [@nashby](https://github.com/nashby).
* [#78](https://github.com/hashie/hashie/pull/78): Merge and update accepts a block - [@jch](https://github.com/jch).
* [#72](https://github.com/hashie/hashie/pull/72): Updated gemspec with license info - [@jordimassaguerpla](https://github.com/jordimassaguerpla).

### Changed

* [#28](https://github.com/hashie/hashie/pull/28): Hashie::Extensions::Coercion coerce_keys takes arguments - [@mattfawcett](https://github.com/mattfawcett).
* [#77](https://github.com/hashie/hashie/pull/77): Removed id, type, and object_id as special allowable keys - [@jch](https://github.com/jch).

### Fixed

* [#27](https://github.com/hashie/hashie/pull/27): Initialize with merge coerces values - [@mattfawcett](https://github.com/mattfawcett).
* [#39](https://github.com/hashie/hashie/pull/39): Trash removes translated values on initialization - [@sleverbor](https://github.com/sleverbor).
* [#49](https://github.com/hashie/hashie/pull/49): Hashie::Hash inherits from ::Hash to avoid ambiguity - [@meh](https://github.com/meh), [@orend](https://github.com/orend).
* [#62](https://github.com/hashie/hashie/pull/62): Updated respond_to? method signature to match ruby core definition - [@dlupu](https://github.com/dlupu).
* [#63](https://github.com/hashie/hashie/pull/63): Dash defaults are dup'ed before assigned - [@ohrite](https://github.com/ohrite).
* [#66](https://github.com/hashie/hashie/pull/66): Mash#fetch works with symbol or string keys - [@arthwood](https://github.com/arthwood).