Improve debug

[pitbulk]

• Optionally raise detailed exceptions vs. returning False #160. Optionally raise detailed exceptions vs. returning False
• Implement a more specific exception class for handling some validation errors
• Improve/Fix tests

[haikuginger]

@pitbulk, apologies that we didn't get around to reviewing this before you merged it. Would it be possible to get a version number bump?

[pitbulk]

You can still review it. I plan to do a new release next week.

[haikuginger]

@pitbulk, thanks! A full review will be coming in the next day or two, although I don't expect any issues from a basic reading of the code.

[haikuginger]

@pitbulk, looks great! Thanks for making this change!