This PR closes five issues.

Features

• Migrate old SymbolInputView to new composable with improved UI
• Implement extra key panel customization (Closes Suggestion #996, closes supplement to last feature request #952, closes about shortcuts at the bottom of the screen #951):
  • Change symbols and commands and their order in the extra key panel
  • Add setting for panel to display two rows
  • Allow user to keep the symbols input empty
• Add command allowing user to press any key of a physical keyboard via the UI (is also used in the extra key panel for arrow keys and tab commands)

Enhancements

• Auto-save on running runner (Closes Save before running #980)
• Enable RTL support for word wrap (Closes Switch editor text direction #991 )

Bug fixes

• Fix theme installation for incompatible themes