* feat: define dark and light color palettes
* feat: add customization of status-right & status-left sections
* feat: rename to gruvbox_dark256 and implement alpha option
* fix: transparency for tabs in left status bar
* fix: shellcheck errors
* fix: files according to shfmt
* feat: remove unnecessary modeline
* feat: save palettes as 256 color
* feat: update information about dark256 & light256 themes
* chore: add changelog entry
* feat: add dummy test for linux
* feat: add multiple test execution
* fix: update exec of multiple scripts for linux
* fix: execute tests with code from the branch
* fix: fail test exec if at least one test fail
* fix: typo
* wip: test if symlink work
* feat: add new test for check setup of light256 theme
* feat: when theme enabled and not set it default to dark256
* feat: increase tests coverage of checking themes activation
* refactor: rename tests_linux job
* chore: add changelog entry