`defaultLinkTo` makes anchors point to the correct path which broke
parsing because it expected href to start with `#gistcomment`.
This commit changes the implementation to make `defaultLinkTo` point
to the correct page (using `getURI` instead of `self::URI`) and search
with `*=` instead of `^=`.
Adds a new bridge for https://gist.github.com
The bridge generates feeds for comments on a particular gist based on
the gist ID or full URI. For better readability the general behavior
of code sections is manually restored with the original CSS styles
from GitHub.
Dag
Eugene Molotov
Florent Machen
logmanoriginal