- Revised which timelines support additive blending: IK and path
constraint mix timelines no longer support add blend (treat as
replace). Physics constraint timelines only support add for wind
and gravity. Ports spine-libgdx commit b92058975.
- Fixed alpha and RGB timeline flicker when blend is setup and alpha
is not 1: interpolate from setup value instead of set-then-add.
Clamp color output to 0-1. Ports spine-libgdx commit 8943c84d8.
- spine-cpp/spine-cpp was moved into spine-cpp directory, so spine-cpp/spine-cpp/src -> spine-cpp/src, spine-cpp/spine-cpp/include -> spine-cpp/include
- Added scaffold for DebugPrinter to be used by runtime comparison tests
- Added build.sh
