Minor improvements.

TMUX:
- fix the SHELL to allow colors and Vim keyset
- C-" to start the preset session 1
- resizing of panels

Brew:
- keep info file after installing a package

SBT:
- the usual mess of versions
Emacs!

After ignoring emacs for years and praising vim, I am now an emacs
fanboy :)
I am still a vim fanboy don't worry. But both are great complement
to the UNIX culture and Emacs has a real language to be hacked in
and out.
Emacs improved

- scala mode with tweaking
- git with magit, IRC with ERC, etc.
[emacs] git, multiple-cursors, erc, scala-mode...

More Emacs goodness, tweaked just enough for me.