Everything Ready for Demo
Done with Demo for the night.
Scrolling now uses native scrolling instead of css position.
Finished Slider upgrade \n \n Slider now responds to common keyboard scroll commands.
Fixed a problem with the scrollbar whereby click/drag coordinates were incorrect in the presence of horizontal letterboxing.
Merge branch 'platform' of https://github.com/jacobabrennan/instruction_lab into platform
Progress on SVG version of control bar