gameapi builder modelling tool version update

New features includes:

 1) pkg file support. Now it's possible to package whole animations into single pkg file.
 2) pkg files can also be split to 6 parts for quicker concurrent loading from a web page via browser's url loading mechanism 
 3) tons of small fixes to the actual animation mechanisms.
4) vr support now works better with --vr oculus or --vr vive switches
5) tons of performance optimizations. Load time went from 35s -> 24s -> 8s for the most heavy test cases we have
6) everyone should check https://meshpage.org/