why'd he quit?
mercutio: https://twitter.com/MiodVallat/status/667269295286689792 and maybe http://pastebin.com/W9RbUUN1
TWITTER: It turns out that burning a 15+ years-old bridge is not as difficult as expected. (Thu Nov 19 09:12:51 +0000 2015, retweeted 7 times)
tl;dr he burned-out
yeh i can understand burning out on open source stuff, it happens quite frequently really
a lot of the long-term projects have changed lead developers.