fixed problem with filtering of unique event handlers. Turns out there is a valid reason to have the exact same handler registed more than once
fix interpolation problem
another fix to interpolation
still working on determinism
minor gui fix
Merge branch 'development' of https://github.com/adlnet/Sandbox into development
more work on determism. wow, this is tricky
lets conserve emscriptem memory where possible, we have to manage manually