redding/assert — pull request #176 by kellyredding (2014-01-01 18:28:11+00:00)
Title: cleanups/standardizations to assertion fail messages

This standardizes all assertion fail messages to use the format:
`"Expected {act-value} to {not }be {something|exp-value}".

Before, the messages had difference formats depending on various
things like the nature of the assertion, when the assertion was
added, and whether it was a "not" assertion. This cleans things
up and makes them consistent so there is no guessing how to write
the fail messages when implementing a new assertion.

This also includes some cleanups to the assertion tests.

@jcredding - no new behavior, just cleanups (since this latest assert effort is becoming mainly about cleanups). Ready for review.