0.9.0

Added

• Reporter API.
  ktlint comes with 3 built-in reporters: plain (default; ?group_by_file can be appended to enable grouping by file (shown below)), json and checkstyle.

$ ktlint --reporter=plain?group_by_file
path/to/file.kt
  1:10 Unused import.
  2:10 Unnecessary "Unit" return type.
path/to/another-file.kt
  1:10 Unnecessary semicolon.

• string-template,
  no-empty-class-body,
  max-line-length (#47),
  final-newline (activated only if insert_final_newline is set in .editorconfig (under [*.{kt,kts}])) rules.
• --limit CLI option (e.g. use --limit=10 to limit the number of errors to display).
• --relative CLI flag which makes ktlint output file paths relative to working directory (e.g. dir/file.kt instead of
  /home/269/project/dir/file.kt).

Changed

• BREAKING: JDK version to 1.8 (as a result of upgrading kotlin-compiler to 1.1.3-2 (from 1.1.0)).
• file matching (offloaded to klob).

Deprecated

• --ruleset-repository and --ruleset-update CLI arguments in favour of --repository and --repository-update
  respectively (--ruleset-* will be removed in 1.0.0).
• ktlint-intellij-idea-integration binary
  (Intellij IDEA integration task is now included in ktlint (as ktlint --apply-to-idea)).