Merge remote-tracking branch 'fc-webgl-old/pregmod-master' into fc-webgl

css/art/art.css

src/art/artJS.js

src/art/webgl/art.js

src/art/webgl/engine.js

src/art/webgl/ui.js

src/data/backwardsCompatibility/datatypeCleanup.js

src/events/eventUtils.js

src/events/scheduled/burst/burst.js

src/gui/options/options.js

src/js/SlaveState.js

tsconfig.json