pre-commit-hooks v2.4.0

Features

• Add diff output to pretty-format-json when run without --autofix.
  • #408 PR by @joepin.
• Add --chars option to trailing-whitespace fixer to control which characters are stripped instead of all whitespace.
  • #421 PR by @iconmaster5326.

Fixes

• Fix requirements-txt-fixer when file does not end in a newline.
  • #414 issue by @barakreif.
  • #415 PR by @barakreif.
• Fix double printing of filename in pretty-format-json.
  • #419 PR by @asottile.