v3.0: Rename project, de-couple from input/output files, refactor, add features.

Codebase was overhauled to de-couple input files and compiled dotfiles from the script itself. Significant changes include:

Project is now called dotfiles-manager and has been de-coupled from input/output files.
Only the bash file for current system is compiled by default (fixes #26).
New switches: -i --input-dir, -o --output-dir, -f --file, --no-local
Config file ~/.dotfilesrc now supported -- can be used to specify input_dir.
Local input files are now suffixed with _local.
Input files common across platforms are now suffixed with _global.
vimrc is now compiled from input files like other dotfiles (no more symlinking).
Don't tear down test files/dirs that are not under testenv temp dir (fixes #23).
When reverting to a backup, files are now copied rather than moved.
Errors are now printed to to stderr.
Simpler solution for test file teardown safety (better fix for #23).
Prod code has been formatted using autopep8 aggressive level 2.
Most pylint issues have been addressed.
Package names are now pythonic and not duplicated by modules.

rucker / dotfiles-manager