Breaking

• SwiftLint now requires Swift 5.3 or higher to build.
  JP Simard

Experimental

• None.

Enhancements

• Add configuration options to missing_docs rule:

  • excludes_extensions defaults to true to skip reporting violations for extensions with missing documentation comments.
  • excludes_inherited_types defaults to true to skip reporting violations for inherited declarations, like subclass overrides.
    Ben Fox

• Fix false negative on redundant_optional_initialization rule when variable has observers.
  Isaac Ressler #3621

• Make test_case_accessibility rule identify invalid test functions with parameters.
  Keith Smiley #3612

• Add duplicated_key_in_dictionary_literal rule to warn against duplicated keys in dictionary literals.
  Marcelo Fabri

• Fix the rule name from "Colon" to "Colon Spacing" to improve phrasing.
  Radu #3587

• Add discouraged_none_name opt-in rule to discourage naming cases and static/class members "none", which can conflict with Swift's Optional<T>.none when checking equality.
  Kane Cheshire #3624

• Improve language and positioning of file_length warnings when ignore_comment_only_lines: true.
  Steven Grosmark #3654

• Add anonymous_argument_in_multiline_closure opt-in rule to validate that named arguments are used in closures that span multiple lines.
  Marcelo Fabri

Bug Fixes

• Fix false positives in empty_enum_arguments rule when comparing values with a static member (e.g. if number == .zero).
  Marcelo Fabri #3562

• Fix the regex for expiring-todos.
  namolnad #3597

• Fix type_contents_order initializer detection.
  StevenMagdy

• Fix autocorrect when there's no space between the tuple the in keyword on unneeded_parentheses_in_closure_argument rule.
  p-x9 #3633

• Fix unused_capture_list, empty_enum_arguments, implicit_return and explicit_type_interface rules when using Swift 5.4.
  Marcelo Fabri #3615 #3685

• Fix Xcode build logs with spaces in paths preventing analyze from running.
  adamawolf