Update Russian translation.
Add optional button title to panel button. Closes #4.
Fix panel button size issues.
Make panel button icon optional. References #4.
Add Norwegian Bokmål translation.
Treat popup command as toggle. Closes #17.
Add Slovak translation.
Make section button a class.
Add choosing icon sizes of launchers and categories. Closes #12.
Add scrolling to sidebar.
Simplify handling of keyboard focus.
Check for null launchers.
Allow subclasses to extend context menu.
Add menu action to clear recently used.
Hide implementation of finding launchers.
Hide implementation of loading launcher details.
Add menu actions to sort favorites alphabetically.
Show launcher name in context menu.
Add icons to context menu.
Update strings.