graph little code improvements and bug fixes
graph little code improvements and bug fixes

basisjs/basisjs,istrel/basisjs,basisjs/basisjs,tyanas/basisjs,fateevv/basisjs,tyanas/basisjs,smelukov/basisjs,fateevv/basisjs,istrel/basisjs,fateevv/basisjs,basisjs/basisjs,istrel/basisjs,smelukov/basisjs,smelukov/basisjs,tyanas/basisjs