spine 3.6~4.1 for axmol

Usage

Delete all files of folder axmol/extensions/spine
Switch to branch spinexx then copy spine-axmol/spine to axmol/extensions/spine

References

axmol: https://github.com/axmolengine/axmol
spine-runtimes: https://github.com/EsotericSoftware/spine-runtimes