Generate $/index.md rather than $.md

Fix #3
Remove jars on clean
Don't emit namespace prefixes in namespace indexes

Fix #4
Build with latest changes
Alphabetize var lists with headers

Fix #4
Needed more whitespace in that last commit
Purge debug-dir
@cesarbp sees all my flaws

Fix #4
Conditionalize headings
Escape docstrings

Some docstrings contain text which is being parsed incorrectly as
markdown when it should just be raw text. This commit fixes that
behavior.
Change munge & include behavior
Rework munging so that jekyll behaves better
Clean link generation & emit per-ns docs

Fix #7
Rebuild prior to release
Merge branch 'release/0.0.12'

 - Fix #7
 - Fix #6
 - Fix #4
 - Fix #3