Merge branch 'picking' of https://github.com/mol-star/mol-star-proto into mol-script

.travis.yml

package-lock.json

package.json

src/mol-app/ui/visualization/image-canvas.tsx

src/mol-app/ui/visualization/viewport.tsx

src/mol-geo/representation/index.ts

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

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

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

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

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

src/mol-geo/representation/volume/surface.ts

src/mol-geo/shape/mesh-builder.ts

src/mol-geo/shape/mesh.ts

src/mol-geo/util/color-data.ts

src/mol-geo/util/marching-cubes/algorithm.ts

src/mol-geo/util/picking.ts

src/mol-gl/_spec/renderer.spec.ts

src/mol-gl/render-object.ts

src/mol-gl/renderable.ts