use pre-warp instead of <br> for RSS feed

#109 add assignee filter to rss feed

fix diff generated between feed entries with different issue IDs

fix subject diff getting html escaped

add diffs to RSS feed

change rss feed to display the issue history

add three emoji sequences (experimental feature)

(0) -100 -30 -10 -7 +7 +10 +30 tip

mercurial