Lönn β - 0.2.0

• Added basic graphics settings to the config file
• Added support for dropdowns in property windows
• Added dropdowns to all vanilla entities and triggers that need them
• Added line, bucket, and circle brush tool
• Added Fake Heart and Dream Heart entities
• Added Iceball and Ice Wall as separate entity placements
• The MacOS build now works properly. Thanks to @swoolcock for testing
• Improved file open dialog. Thanks to @0x0ade for the builds
• Window size and position now persist across sessions
• Lönn now runs at a low frame rate when unfocused to save computer resources
• Trigger names by default no longer end with "Trigger" because that's redundant
• Entity and trigger IDs are now unique by map rather than by room
• Player entity now mentions that it's a spawn point again
• Fixed lightning breaker box justification
• Fixed feather selection box
• Fixed killbox rendering
• Fixed typo in dash switch placement
• Fixed selection hotkeys doing more than they should sometimes
• Fixed crash when selecting an object that overlaps with another room
• Fixed crash when adding a checkpoint to a room with no spawn points
• Fixed mouse oddities on MacOS related to window focus
• Fixed various tiny visual bugs