Update docs for static-pages branch.
Update all page-url calls to only use the slug.
Hey, look! User-defined routes are easy. Slot-value is gross though.
Remove page-url methods now stored in the config.

We probably don't want to merge this in until users have had an
adjustment period or without putting a *big* warning in the NEWS.
Users will need to know to update their configs/steal the :routing
block from the example config.
Update NEWS and remove user-defined routing item from docs.
Bump version to 0.94-dev.
Merge pull request #47 from redline6561/user-defined-routing

User defined routing
Minor bugfix to PAGE-URL. Never use the wrong data in testing.
First pass at static-pages as a plugin.
Cleanup imports and use write-document.
Add minor comment.
Minimal changes to support tagless, dateless static-pages using post template.

Note that tagless or dateless posts might not behave as expected in
indexes. Filtering by tag still works but sorting by date doesn't
drop the nil values.
Tweak hyde/post indentation a bit.
Add a title and treat static-pages as markdown.