0.2.1-beta

App changes

• Added F1-F6 key shortcuts for all editor panels
• Updated JSON file format with some extra dev-friendly values
• Added a JSON changelog file for devs working on importers
• Add JSON changelog to app start page

JSON format changes

• Added __tileX / __tileY to layerInstances.autoTiles
• Added __tileX / __tileY to layerInstances.gridTiles
• Renamed v to tileId in layerInstances.gridTiles
• Renamed tileSpacing -> spacing in tilesets definitions
• Added padding to tilesets definitions