Datetimetools

Updated setup.py to provide traceback when it fails.

Added Windows-specific package.

Something fixed building...

Main changes include:
- use of [datetime](https://github.com/mattkjames7/datetime.git)
- changed from precompiled to source distribution

**Full Changelog**: https://github.com/mattkjames7/DateTimeTools/compare/v1.1.0...v1.2.0

A release!

This should support Linux, Windows and it might even work on Mac if you have g++ installed...