New Spine runtime

[badlogic]

Hi folks,

Mario from Esoteric Software here. I've just completed the first iteration of our new Spine runtime for JavaScript/TypeScript. It's a complete rewrite of the old JavaScript runtime in TypeScript to make it more maintainable. Obviously TypeScript is not required to use the runtime, but it is required to make changes to it.

The development branch for the new runtime is here https://github.com/EsotericSoftware/spine-runtimes/tree/spine-ts/spine-ts We currently have a single backend based on WebGL. There's also a sample here: https://github.com/EsotericSoftware/spine-runtimes/tree/spine-ts/spine-ts/webgl/example

It should be mostly trivial to replace the current Spine runtime you use with this one. Let me know if I can be of assistance.

Keep up the good work,
Mario