Merge branch '4.0' into 4.1-beta

# Conflicts:
#	spine-ts/package-lock.json
#	spine-ts/package.json
#	spine-ts/spine-canvas/package.json
#	spine-ts/spine-core/package.json
#	spine-ts/spine-player/package.json
#	spine-ts/spine-threejs/package.json
#	spine-ts/spine-webgl/package.json