[Crawl-ref-discuss] branches

[Raphael L. <rap...@gm...>]

I've just pushed the new (unfinished) feature mimics in a new branch, let me
know what you think of it.

Also, I noticed that we have a bunch of branches which have already been
merged. Shouldn't we delete them? I think they are:

abyss
articulated_kraken
ashtier?
ench-split
octopus
recite
slime_connectivity
tornado
unarmed_effects
unicode
zotdef

can I remove them? Any other we can clean up?