[meld] (16 commits) ...Merge branch 'precommit'

[Kai Willadsen <kaiw src gnome org>]

Summary of changes:

  205041d... po: Trim trailing whitespace (*)
  c44d765... Fix files missing newline at end of line (*)
  e1df32f... Fix files with extraneous newline at end of file (*)
  020b2a0... vc: Remove unnecessary pragma (*)
  fd5b15b... Add initial pre-commit config (*)
  6edbe7e... Move from flake8-import-order to isort (*)
  fa34dd0... Update comment for flake8 (*)
  45f7c3b... test: Update for flake8 naming (*)
  3090146... Fix some flake8 naming (*)
  f62794a... Add final flake8 ignores (*)
  96336b3... Use pre-commit in CI (*)
  ca13e8a... Install git for pre-commit's requirement (*)
  d25b6f3... Show diff on pre-commit hook failure (*)
  8b295b9... CI: Don't run from rawhide and make the lint stage saner (*)
  f072407... Add isort to pre-commit config (*)
  7861204... Merge branch 'precommit'

(*) This commit already existed in another branch; no separate mail sent