Install all tmux config files, patch powerline/config.py
Merge pull request #8 from ZyX-I/powerline-fixes-3

Install "tmux" config files and patch "powerline/config.py".

This commit comes courtesy ZyX. (Hey, thanks!)
Sanity checks added to recent Powerline merge.

While doubtlessly overkill, such checks should prevent unwanted crisis...
going forward. In any case, a little prudency never hurt. (That much, anyway!)
Remove python-argparse dependency

According to this message from portage:

!!! The following installed packages are masked:
- virtual/python-argparse-1::gentoo (masked by: package.mask)
/usr/portage/profiles/package.mask:
# Michał Górny <mgorny@gentoo.org> (6 Jul 2014)
# (on behalf of python@gentoo.org)
# The modules provided by those virtuals are built-in in all currently
# supported Python implementations. If your ebuild depends on either
# of them, please just remove the dependency. Removal in 30 days.
Merge pull request #9 from JelteF/patch-1

Remove python-argparse dependency in powerline.
Powerline dependencies modestly streamlined.
Powerline installation meessages shortened.
Powerline dependency regressions corrected.

Apologies for the recent breakage, folks. This should clear things up a tad.
app-misc/powerline: remove deprecated dependency on python 2.6 and add
compatibilty to python 3.4
Merge pull request #10 from N8Fear/powerline-fix

app-misc/powerline: remove python 2.6 and add python 3.4 dependencies.
app-misc/powerline: Bump with recent improvements.
games-roguelike/cataclysm-dda-9999: SDL2 is in.