Squashed 'floo/common/' changes from 267297c..bf8a62c

bf8a62c Merge commit 'c870c5d358a60130095f43b15bdffef9b91cfb63'
04f3d82 This has to happen first. #209
4c1dfef Do the least expensive thing first. #209
d20dc50 Separate out writing to log file.
2a3c41f now follow/unfollow user is by username, not connID.  Can follow multiple usernames. Jumps to last highlight by username upon following
f597823 Use a set. #209
f7fd721 Ignore flooty. #209
3a3ac43 Remove sublime stuff out of common. #209
0052e24 Follow user works. #209
25d4fa4 Progress on follow users. #209

git-subtree-dir: floo/common
git-subtree-split: bf8a62c08df0702bd3289b62e8fb51ac06db18cc
Merge commit '7864ad87ea0b3c2f077af1393148353e9ee6afde' into enhancement/65/follow_user