0.32.0

New Features

* Hooks are now run in parallel by default
* Add `concurrency` global option allowing you to specify the number of threads
  to use when running hooks concurrently
* Add `parallelize` hook option which specifies whether or not this hook should
  be run in parallel (default is `true`)
* Add `processors` hook option allowing you to specify how many processing
  units a hook should require
* Add `ForbiddenBranches` pre-commit hook which prevents creating a commit
  on any blacklisted branch by name/pattern
* Add `MessageFormat` commit-msg hook to validate commit messages against
  a regex pattern

Changes

* Improve error message output when there is a problem processing messages
  via `extract_messages` pre-commit hook helper
* Switch `ScssLint` pre-commit hook to use the JSON output formatter instead
  of the default formatter
* Change tense of hook descriptions from progressive indicative form ("Running")
  to indicative present form ("Run") so output reads better in parallel hook
  runs

Bug Fixes

* Fix bug where amending a commit with command line arguments containing
  Unicode characters could cause a crash due to invalid byte sequences
* Fix `Minitest` pre-push hook to include all test files

0.32.0.rc1

* Add `concurrency` global option allowing you to specify the number of threads
  to use when running hooks concurrently
* Add `parallelize` hook option which specifies whether or not this hook should
  be run in parallel (default is `true`)
* Add `processors` hook option allowing you to specify how many processing
  units a hook should require

0.31.0

* Add support for glob patterns to `ProtectedBranches` pre-push hook
* Add `Mdl` pre-commit hook to run
  [`mdl`](https://github.com/mivok/markdownlint) on Markdown files
* Add `--without-color` flag to `RailsBestPractices` pre-commit hook
  to fix parsing issues due to color escape sequences
* Improve error message when `gemfile` has not had a dependency installed
* Fix `RuboCop` pre-commit hook to not swallow cop messages when `parser` gem
  warnings are output to STDERR

0.30.0

New Features

* Add `Dogma` pre-commit hook to lint Elixir files with
  [dogma](http://elixir-lang.org/) files
* Add `Minitest` pre-push hook to run Minitest tests
* Add `RailsBestPractices` pre-commit hook which lints code with
  [`rails_best_practices`](https://github.com/railsbp/rails_best_practices)

Bug Fixes

* Fix `--run` flag to not block reading STDIN when using existing hook scripts
* Fix `RuboCop` pre-commit hook to fail when RuboCop version specified by
  Bundler context is not available
* Fix `TextWidth` commit-msg hook to not include newline characters in
  calculated width

0.29.1 release

* Raise error when hooks are defined with invalid names (i.e. non-alphanumeric
  characters)
* Fix hook signing when specifying hook name
* Fix `BundleCheck` pre-commit hook to not report false negatives when running
  via `overcommit --run` with local changes

0.29.0 release

Important Security Fix

* Fix vulnerability where disabling signature verification would not be caught
  by signature verification, allowing an attacker to bypass the check. If you
  disable signature verification in your configuration, you must rename the
  option to `verify_signatures` and should audit your hooks.

New Features

* Allow nested arrays in `include` and `exclude` options so lists of file
  glob patterns can be shared across hook configurations via YAML references
* Add `NginxTest` pre-commit hook that checks nginx configuration files with
  [`nginx -t`](https://www.nginx.com/resources/wiki/start/topics/tutorials/commandline/)
* Respect `core.commentchar` configuration when reading commit messages

Changes

* Rename `verify_plugin_signatures` to `verify_signatures`

Bug Fixes

* Fix `Jscs` pre-commit hook to handle the new `jscs`
  [exit codes](https://github.com/jscs-dev/node-jscs/wiki/Exit-codes) introduced
  as of 2.2.0
* Fix `Scalastyle` pre-commit hook to fail with non-zero exit statuses

0.28.0 release

* Ensure `applicable_files` hook helper returns files in lexicographic order
* Add `NpmInstall` post-checkout, post-commit, post-merge, and post-rewrite hooks
* Add `PuppetLint` pre-commit hook that checks Puppet code with
  [puppet-lint](http://puppet-lint.com/)
* Add `BowerInstall` post-checkout, post-commit, post-merge, and post-rewrite hooks
* Add `BundleInstall` post-checkout, post-commit, post-merge, and post-rewrite hooks
* Add `Sqlint` pre-commit hook that checks SQL code with
  [sqlint](https://github.com/purcell/sqlint)
* Add Windows support
* Add `Hlint` pre-commit hook that checks Haskell files with
  [hlint](https://github.com/ndmitchell/hlint)
* Add `ExecutePermissions` pre-commit hook that checks file mode for
  unnecessary execute permissions

0.27.0 release

= New Features

* Add `HtmlHint` pre-commit hook that checks HTML files with
  [HTMLHint](http://htmlhint.com/)
* Add support to the hook `execute` helper for accepting an optional list of
  splittable command arguments for transparently dealing with really long file
  lists and the operating system command length limit
* Add `modified_files` helper to `PostCheckout` and `PostRewrite` hooks
* Add `rewritten_commits` helper to `PostRewrite` hooks
* Add `gemfile` option to configuration file which allows a `Gemfile` to be
  loaded by Bundler to enforce particular gem versions during hook runs
* Add support for `OVERCOMMIT_DEBUG` environment variable which toggles the
  display of additional verbose output from executed commands
* Add support for defining
  [hooks based on your existing git hooks](README.md#adding-existing-git-hooks)
  within your `.overcommit.yml` (no Ruby code required)
* Add support for filtering all hooks except a small list via the `ONLY`
  environment variable (similar to `SKIP` except a whitelist instead of
  blacklist)

= Changes

* Don't display "No applicable _hook-type_ hooks to run" message unless debug
  mode is enabled

= Bug Fixes

* Fix pre-commit hook bug where amending a commit which breaks a symlink would
  result in that symlink not being included in the list of modified files
* Fix `CaseConflicts` pre-commit hook handling of large sets of files
* Fix `SemiStandard`/`Standard` hooks to read from `STDOUT` instead of `STDERR`
  and handle new output format
* Fix `commit-msg` hooks to handle large commit messages auto-generated by the
  `--verbose` flag for `git commit`

0.26.0 release

= New Features

* Add `EmptyMessage` commit-msg hook that reports commits messages that are
  empty or contain only whitespace
* Add `env` hook configuration option that allows you to set values for
  environment variables during the course of a particular hook's run

= Bug Fixes

* Fix handling of paths with spaces in the name
* Fix `CaseConflicts` pre-commit hook to not fail on initial commit
* Fix handling of files removed or renamed in a commit amendment

0.25.0 release

* Include SVG files in `ImageOptim`, `XmlLint`, and `XmlSyntax` pre-commit
  hooks by default
* Make `IndexTags` hooks quiet by default
* Add `Vint` pre-commit hook that checks Vim script with
  [Vint](https://github.com/Kuniwak/vint)
* Add `Scalariform` pre-commit hook that checks formatting of Scala code with
  [Scalariform](https://mdr.github.io/scalariform/)
* Add `SlimLint` pre-commit hook that analyzes Slim templates with
  [Slim-Lint](https://github.com/sds/slim-lint)
* Enhance `HardTabs` and `TrailingWhitespace` pre-commit hooks to including
  line information in errors, making it work as expected when
  `problem_on_unmodified_line` is set to something other than `report`
* Fix handling of changing a symlink to a directory on commit amendment so it
  is not included in the list of modified files for pre-commit hooks
* Rename `Rubocop` pre-commit hook to `RuboCop` to match the project's proper
  name
* Handle empty commit messages in `CapitalizedSubject`, `SingleLineSubject`,
  `HardTabs`, `TextWidth`, and `TrailingPeriod` commit-msg hooks