Xprofile

- Added: Refactored subcommands in an attempt to keep it simple and stupid

- Bugfix: Can't create more then 1 profile
- Bugfix: Use find_executable instead of hardcoding the path to xrandr
- Added: Add an exec_post hook when activating a profile

- Added: Implement the --dry-run option for the `create` subcommand.
- Added: Improve verbose logging for the `auto` and `activate` subcommands
- Added: unittest, code is now stable and has 97% coverage.
- Added: Reduced the amount of xrandr calls needed (now always parsing
xrandr --verbose). This should improve the `auto` and `create`
subcommands.
- Bugfix: `xprofile current` was not explicitly returning a 0 exit code
- Bugfix: do not check or edid in the `create` subcommand
- Bugfix: fix wrong usage of imported DEFAULT_SECTION variable
- Removed: not setting DISPLAY=:0 anymore

- Added: man pages for xprofile(1) and xprofilerc(5)
- Added: python 2.6 compatibility
- Bugfix: do not continue executing if xrandr fails

- Added: This changelog file.

- Added: Make the project python 3.x compatible.