Pyorbs

Fixed
- The `pkg_resources` package is also excluded from lockfiles

Fixed
- Removed editable packages from lockfiles

Added
- The `-i` and `--info` options for listing outdated packages

Changed
- Orbs are sorted by their name in the orb list

Removed
- Python 3.5 support

Changed
- Migrated the GitHub repository

Added
- Bash command completion

Added
- Option for testing whether requirements files are up-to-date