Update to Fennel 0.3.2.

Update to fennel 0.3.1.

Make FennelConf 2020 the default page.

Add REPL for tag docs

- make the links to the docs like directories, so relative links work
- generate the files used in the REPL for the tag dirs

Generate a title with the tag for the tag docs

Also ignore patch version directories

Merge pull request #20 from jaawerth/fix-web-repl-metadata

fix docstring usage in web REPL

Corrected metadata usage in web REPL

Ensured moduleName is "fennel/fennel" in both repl and compileString,
and useMetadata is enabled in compileString

Add shim for os.getenv since it's required for fennel loading.

Bump to fennel 0.3.0.

Update footer URL.

Fix html.fnl for latest fennel.

Latest (nearly 0.3.0) fennel submodule.

Tweak version listing.

Merge pull request #19 from christoph-frick/generate-version-indices

Generate version indices

Generate a single version index for the tags

Generate links to the tag directories

Get the tags to generate from the fennel git tags

Auto-escaping was messing up the copyright sign.

Need to add index.html back to the upload target.