kwsxing

Support both 4.2 and older versions and fix an exception

1

## Proposed changes * Support both 4.2 and older versions * Fix an exception when clicking `File -> Defaults -> Save Startup File` ## Screenshots/Screencasts Below is the exception in...

Asynchronous loading of mesh assets

2

When I import a big mesh file, the application is halted for a long time. I can do this feature if you think it is worth it.

Supports decoding the JSON string

4

Add some functions to decode the JSON string.