Pimento

Re-published to Pypi with correct indicators for python 3 support.

Added support for python 3, as well as some `menu` options.

For a full list of changes, see the [closed issues](https://github.com/toejough/pimento/issues?q=milestone%3A0.5.0+is%3Aclosed) for this release.

Updated the API to allow for calling pimento.menu with just the options.

Added some logic to allow the old style (pre_prompt, then options), but added documentation to indicate that this is now deprecated and will eventually be removed.

For a full list of changes, see the [issues](https://github.com/toejough/pimento/issues?q=milestone%3Av0.4.0) for this milestone.

Added a CLI script and did some internal cleanup.

For details, see the [closed issues](https://github.com/toejough/pimento/issues?q=milestone%3Av0.3.0+is%3Aclosed)

Added better documentation and various bugfixes/enhancements for better handling of strings (like always treating items as strings, instead of just when printing them).

For a full list of what happened, see the [closed issues](https://github.com/toejough/pimento/issues?q=milestone%3Av0.2.0+is%3Aclosed).

This release introduces more complete testing (mostly for type checking the arguments) and bugfixes for any of those new tests that failed:
- Prompts must be strings
- item list must not be empty
- item list must be a finite iterable
- default_index must be a positive integer (tests and code checks already existed for integer type and index less than the length of the item list)