v0.14alpha7

Changelog:

• Converted from Add-on to Extension. Now you need to drag-and-drop the extension .zip archive into blender to install it.
• Added new UI to edit custom properties used by the game
• Fixed material requiring full_path property
• Finally removed Dots Stroke material
• Exported textures are now compatible with Object Editor
• Added automatic bone weight normalization
• Fixed camera import
• Pinned quicktex version to 0.2.1 #4
• Added support for meshes with [ in the name
• Added a few new warnings for possible errors #4
• Fixed incorrect vertex normal export #3 #5
• Added hashing of long object names when used as a part of a property name
• Made asserts optional and added a "Strict mode" with the old behavior
• Fixed mesh properties being case-sensitive #6
• Added better property descriptions