Comment feeds for words and lists

Just added a feed for the comments attached to every word and word list, so you can more easily keep track of discussions, or see if anyone has responded to a comment or citation you left. As always, please send me suggestions or bug reports for improving this feature.

Someday I hope to add email notifications for keeping track of various things, but feeds are easier to implement, so that’s what we have for now. Occam’s razor guiding me, as usual.