Minify CSS
To force a download by setting the href, we need synchronous rendering
Merge pull request #2347 from tschaub/render-sync

Fix the export map example.
Expand on docs for observable properties
Merge pull request #2350 from probins/obj

Expand on docs for observable properties
Merge pull request #2346 from tschaub/clean-css

Minify CSS.
Remove unnecessary linting of generated exports file
No reason for build.py to run generate-exports.js

The doc task does not use the generated exports.js file.
Unused JAR executable
Unused JAVA executable