Re-added extendsFrom
Re-added extendsFrom

MicroWorldwide/PlayCanvas,nizihabi/engine,RainsSoft/engine,sereepap2029/playcanvas,nizihabi/engine,sanyaade-teachings/engine,3DGEOM/engine,horryq/engine-1,MicroWorldwide/PlayCanvas,sanyaade-teachings/engine,sanyaade-teachings/engine,SuperStarPL/engine,RainsSoft/engine,maxwellalive/engine,guycalledfrank/engine,shinate/engine,SuperStarPL/engine,H1Gdev/engine,horryq/engine-1,playcanvas/engine,maxwellalive/engine,shinate/engine,nizihabi/engine,sereepap2029/playcanvas,3DGEOM/engine,sereepap2029/playcanvas,playcanvas/engine,shinate/engine,guycalledfrank/engine,SuperStarPL/engine,aidinabedi/playcanvas-engine,3DGEOM/engine,horryq/engine-1,H1Gdev/engine,RainsSoft/engine,maxwellalive/engine,aidinabedi/playcanvas-engine