Changes:
- Rework skel to use new build structure (split task file, etc.)
- Add some linters (scss and php)
- Update README
- Update gitignore
- Removed unnecessary b5 htaccess install command (Laravel ships with .htaccess)
- Added GitLab merge request templates
- Added M1 docker support
- Added Laravel b5 commands (e.g. b5 tinker)