feat(diff): improve diff highlighting

fix(mini): add appropriate background to `MiniClueDescGroup`

Merge pull request #7 from oonamo/release-please--branches--main

chore(main): release 1.2.0

chore(docs): auto-generate helpdocs

feat(mini.statusline): improve styling and use colors closer to lualine

Revert "feat(extras): add firefox extras"

Revert "fix(firefox): use `color-scheme` style and variables to prevent issues"

Revert "chore(extras): auto-generate extras"

Revert "feat(extras): add firefox extras"

refactor(mini): improve `mini.tabline` styling

chore(extras): auto-generate extras

fix(firefox): use `color-scheme` style and variables to prevent issues

fix(core): correctly determine if a custom theme is dark

feat(extras): add firefox extras