More installation information in the README file.
Don't use Werkzeug's reloader in non-debug mode unless we ask for it.
Oops.
Fixed outdate information in error messages' footer.
Make configuration class more like `dict`, add support for merging `dicts`.
Fix outdate information and bug in default theme's main page.
Display page tags with default theme.
Switch the PieCrust server to debug mode with `?!debug` in the URL.
Better date/time handling for pages:
- Date can be specified in the page config.
- Fall back to timestamp 0 (which is fixed) instead of the timestamp of
  the file (which could vary).

Sources can return additional config values to merge with the page's
YAML front matter.
Use ordered dictionaries to preserve priorities between auto-formats.
Fix a bug with page references in cases of failure. Add unit tests.
Fix unit tests.
Don't fail if trying to clean up a file that has already been deleted.
Pass date information to routing when building URLs.
This is so that URLs with dates in them can be built even when the date
information is not coming from the source metadata, but from the page's
config.
Add `autoconfig` page source.
Add `ctrlpignore` file.
Split baking code in smaller files.
Forgot this wasn't C++.
Better combine user sources/routes with the default ones.
Make a nice error message when a layout hasn't been found.