Further optimize the base64 encoding function (precalculate array size needed and avoid push)
Further optimize the base64 encoding function (precalculate array size needed and avoid push)

trentmillar/ddp-level-editor,ryanramage/svg-editor,trentmillar/ddp-level-editor,ryanramage/svg-editor,trentmillar/ddp-level-editor,ryanramage/svg-editor