### New features

* [#7951](https://github.com/rubocop/rubocop/pull/7951): Include `rakefile` file by default. ([@jethrodaniel][])
* [#7921](https://github.com/rubocop/rubocop/pull/7921): Add new `Style/SlicingWithRange` cop. ([@zverok][])
* [#7895](https://github.com/rubocop/rubocop/pull/7895): Include `.simplecov` file by default. ([@robotdana][])
* [#7916](https://github.com/rubocop/rubocop/pull/7916): Support autocorrection for `Lint/AmbiguousRegexpLiteral`. ([@koic][])
* [#7917](https://github.com/rubocop/rubocop/pull/7917): Support autocorrection for `Lint/UselessAccessModifier`. ([@koic][])
* [#595](https://github.com/rubocop/rubocop/issues/595): Add ERB pre-processing for configuration files. ([@jonas054][])
* [#7918](https://github.com/rubocop/rubocop/pull/7918): Support autocorrection for `Lint/AmbiguousOperator`. ([@koic][])
* [#7937](https://github.com/rubocop/rubocop/pull/7937): Support autocorrection for `Style/IfWithSemicolon`. ([@koic][])
* [#3696](https://github.com/rubocop/rubocop/issues/3696): Add `AllowComments` option to `Lint/EmptyWhen` cop. ([@koic][])
* [#7910](https://github.com/rubocop/rubocop/pull/7910): Support autocorrection for `Lint/ParenthesesAsGroupedExpression`. ([@koic][])
* [#7925](https://github.com/rubocop/rubocop/pull/7925): Support autocorrection for `Layout/ConditionPosition`. ([@koic][])
* [#7934](https://github.com/rubocop/rubocop/pull/7934): Support autocorrection for `Lint/EnsureReturn`. ([@koic][])
* [#7922](https://github.com/rubocop/rubocop/pull/7922): Add new `Layout/EmptyLineAroundAttributeAccessor` cop. ([@koic][])

### Bug fixes

* [#7929](https://github.com/rubocop/rubocop/issues/7929): Fix `Style/FrozenStringLiteralComment` to accept frozen_string_literal anywhere in leading comment lines. ([@jeffcarbs][])
* [#7882](https://github.com/rubocop/rubocop/pull/7882): Fix `Style/CaseEquality` when `AllowOnConstant` is `true` and the method receiver is implicit. ([@rafaelfranca][])
* [#7790](https://github.com/rubocop/rubocop/issues/7790): Fix `--parallel` and `--ignore-parent-exclusion` combination. ([@jonas054][])
* [#7881](https://github.com/rubocop/rubocop/issues/7881): Fix `--parallel` and `--force-default-config` combination. ([@jonas054][])
* [#7635](https://github.com/rubocop/rubocop/issues/7635): Fix a false positive for `Style/MultilineWhenThen` when `then` required for a body of `when` is used. ([@koic][])
* [#7905](https://github.com/rubocop/rubocop/pull/7905): Fix an error when running `rubocop --only` or `rubocop --except` options without cop name argument. ([@koic][])
* [#7903](https://github.com/rubocop/rubocop/pull/7903): Fix an incorrect autocorrect for `Style/HashTransformKeys` and `Style/HashTransformValues` cops when line break before `to_h` method. ([@diogoosorio][], [@koic][])
* [#7899](https://github.com/rubocop/rubocop/issues/7899): Fix an infinite loop error for `Layout/SpaceAroundOperators` with `Layout/ExtraSpacing` when using `ForceEqualSignAlignment: true`. ([@koic][])
* [#7885](https://github.com/rubocop/rubocop/issues/7885): Fix `Style/IfUnlessModifier` logic when tabs are used for indentation. ([@jonas054][])
* [#7909](https://github.com/rubocop/rubocop/pull/7909): Fix a false positive for `Lint/ParenthesesAsGroupedExpression` when using an intended grouped parentheses. ([@koic][])
* [#7913](https://github.com/rubocop/rubocop/pull/7913): Fix a false positive for `Lint/LiteralAsCondition` when using `true` literal in `while` and similar cases. ([@koic][])
* [#7928](https://github.com/rubocop/rubocop/issues/7928): Fix a false message for `Style/GuardClause` when using `and` or `or` operators for guard clause in `then` or `else` branches. ([@koic][])
* [#7928](https://github.com/rubocop/rubocop/issues/7928): Fix a false positive for `Style/GuardClause` when assigning the result of a guard condition with `else`. ([@koic][])

### Changes

* [#7860](https://github.com/rubocop/rubocop/issues/7860): Change `AllowInHeredoc` option of `Layout/TrailingWhitespace` to `true` by default. ([@koic][])
* [#7094](https://github.com/rubocop/rubocop/issues/7094): Clarify alignment in `Layout/MultilineOperationIndentation`. ([@jonas054][])
* [#4245](https://github.com/rubocop/rubocop/issues/4245): **(Breaking)** Inspect all files given on command line unless `--only-recognized-file-types` is given. ([@jonas054][])
* [#7390](https://github.com/rubocop/rubocop/issues/7390): **(Breaking)** Enabling a cop overrides disabling its department. ([@jonas054][])
* [#7936](https://github.com/rubocop/rubocop/issues/7936): Mark `Lint/BooleanSymbol` as unsafe. ([@laurmurclar][])
* [#7948](https://github.com/rubocop/rubocop/pull/7948): Mark unsafe for `Style/OptionalArguments`. ([@koic][])
* [#7931](https://github.com/rubocop/rubocop/pull/7931): Remove dependency on the `jaro_winkler` gem, instead depending on `did_you_mean`. This may be a breaking change for RuboCop libraries calling `NameSimilarity#find_similar_name`. ([@bquorning][])

[@jethrodaniel]: https://github.com/jethrodaniel
[@zverok]: https://github.com/zverok
[@robotdana]: https://github.com/robotdana
[@koic]: https://github.com/koic
[@jonas054]: https://github.com/jonas054
[@jeffcarbs]: https://github.com/jeffcarbs
[@rafaelfranca]: https://github.com/rafaelfranca
[@diogoosorio]: https://github.com/diogoosorio
[@laurmurclar]: https://github.com/laurmurclar
[@bquorning]: https://github.com/bquorning
