Autocompletion and subcommand-specific help

This release incorporates two minor changes with some nice capabilities: code completion and subcommand-specific help (and an associated format for printing subcommands).

For both, see the README. There's are new sections about these.

arghandler with fixed readme

Fixing some errors reported in the README.

First release of the arghandler library

This is the official debut of arghandler - an extension to argparse that adds high-level features that take a bunch of boilerplate code to make work with argparse alone. The two key capabilities provided in this release are:

• declaring and supporting subcommands (e.g., git pull) with basically zero-lines of code
• support for auto-configuring the logging level based on a configurable command-line argument

arghandler works with all modern installations of python. Give it a try!