Merge branch 'master' into state_representation

src/apps/canvas/app.ts

src/apps/canvas/component/app.tsx

src/apps/canvas/index.ts

src/apps/canvas/structure-view.ts

src/apps/canvas/util.ts

src/mol-geo/geometry/direct-volume/direct-volume.ts

src/mol-geo/geometry/geometry.ts

src/mol-geo/geometry/mesh/mesh.ts

src/mol-geo/geometry/picking.ts

src/mol-geo/representation/structure/complex-visual.ts

src/mol-geo/representation/structure/index.ts

...representation/structure/representation/ball-and-stick.ts

...resentation/structure/representation/molecular-surface.ts

src/mol-geo/representation/structure/units-visual.ts

...esentation/structure/visual/carbohydrate-link-cylinder.ts

...presentation/structure/visual/carbohydrate-symbol-mesh.ts

...ntation/structure/visual/cross-link-restraint-cylinder.ts

...epresentation/structure/visual/gaussian-density-volume.ts

.../representation/structure/visual/gaussian-surface-mesh.ts

...presentation/structure/visual/inter-unit-link-cylinder.ts