OpenBoard new 1.4.5 v13

All releases are mostly development versions. They can be used, but may contain confusing or unnecessary settings. Settings may be removed or reset on updates. Consider all releases as beta quality at best.

Changes since v12:

• trail color for sliding key and gesture input can be customized (#269)
• when adjusting colors, only main colors are shown by default (use option in top bar menu to show all)
• new simplified keyboard parsing (based on text files instead of xml resources)
  • only used for latin layouts, except azerty, dvorak and colemak
  • should only result in minor visual changes
  • added setting to switch to old parsing
    • the setting will be removed after migration to the new parser(s) is complete, so please report issues that make you switch back
• various small fixes and improvements (#256, #271, #185, #265 and more)