Massive change that should have been several smaller ones, but whatever: - URLs are not slugified anymore, just quoted. - `getPage` now raises an error if the page doesn't exist. - Fixed the Mercurial SCM provider to be able to commit new files. - Fixed various issues with meta-pages and new files. - Better exception classes. - Configurable default file extension, main page name, and templates folder. - New CLI command to cache the wiki. - A few other small fixes.