Large updates

• Errors as visuals instead of spamming notifications
• Made the app a wintery colour theme plugin!
• Improved plugin ability, allowing for more flexible plugins!
• Generalised shared functionality in the games to make making new games easier!
• Preview underneath card editor
• Fixed layouts for some widgets, making them more flexible to allow for below
• Added a splitter bar to change the browse scene view and fit it according to users needs

Smaller updates

• @\tag:tagname1, tagname2@ for tags
• @\priority:num@ or @\pri:num@ for priority (just for sorting... for now)
• Add plugin descriptions
• Made note features highlight in different shades to differentiate them
• ==highlight==, inline code, strikethrough, _underline_
• Made some things not show in the name of the tree widget to make it easier to look at cards
• Differentiate between note features that add cards and those that decorate them

Readme with demo video for non linux users here