Modify regex_replace to return Iterator
Cleanup edit function
Use boxed iterators instead of Vecs. This should also reduce a few
Use CRLF in response headers
Treat "" as a single-line document
Fix bug with empty line at the end
str.lines() makes a \n at the end of file optional, but also prevents
having an empty line at the end. This makes editing twinwiki painful.
Switch to plain .split('\n') instead.
Fix parsing urls with percent encoding
Add copyright and license headers
only add history entry if page changed
history: most recent first
Make "\n" default page content
This makes it easier to edit, as ifoo and afoo work.
only respond with help on missing front page
implement reverting old versions
add global footer with link to help
add tests and fix 'i' command