Legit Versions Save

• Officially drop support for Python 3.4

• Support a second parameter for branches command to restrict the results to matching branches.
• legit --instal can install aliases from a venv-boxed legit.

• Don't install switch on git>=2.23.0.
• Update requirements
• Fix Windows executable release
• Improve tests

• Fix obtaining repo remote
• Update requirements for bug fixes, Python 3.6 support

The windows exe is packaged with Python 2.7.13 and Pyinstaller on 32-bit Windows 7 SP1 with modified legit_r from bfdd3ec52e5b476e88e15fe98abee501935d44c9

• Refactor CLI using click
• Add --verbose option
• Add --fake option
• Move "install" command to --install option
• Add --uninstall option which unsets legit git aliases
• Move "settings" command to --config option
• Improve help output
• Add tests!
• Update CI configuration
• Update README
• Remove support for deprecated Python versions 2.6, 3.2, 3.3

• Support special expression for branch.
• Improve completion
• Better help message.
• Add manpage.
• off_branch becomes optional.
• Use correct branch for unstaging in switch command.
• Fetch and abort if unpublishing branch not found.
• Fix remote name config with legit.remote.

Python 3 compatible.