v0.3.0

New features:

- show in the group title whether it is about untracked files, unstaged changes or both
- untracked files are formatted differently if they are displayed in a separate group
  see variables `ln_pattern_untracked_in_unstaged_changes` and `ln_pattern_untracked_in_separate_group`

Bugfixes:

- don't crash in compatability mode