chart: changes for flexible style customization
chart: changes for flexible style customization

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