Another round...

New

• Added support for Shift-L to change the color of any selected nodes.
• Added support for natural scrolling preference.

Changes

• Updated Russian translation (thanks to Alexandre Prokoudine).
• Updated README.md to change the installation instructions for Arch-based distros to avoid issues with discount library.

Bug Fixes

• Fixed issue where TODO status not inherited by all child nodes.
• Fixed issue where favorited stickers are not displayed in favorited section on application restart.
• Fixed issue that caused errors with tooltip display when linked nodes are mssing.