minitest version 2.9.1 has been released!

* <https://github.com/seattlerb/minitest>

minitest provides a complete suite of testing facilities supporting
TDD, BDD, mocking, and benchmarking.

    "I had a class with Jim Weirich on testing last week and we were
     allowed to choose our testing frameworks. Kirk Haines and I were
     paired up and we cracked open the code for a few test
     frameworks...

     I MUST say that mintiest is *very* readable / understandable
     compared to the 'other two' options we looked at. Nicely done and
     thank you for helping us keep our mental sanity."

    -- Wayne E. Seguin

minitest/unit is a small and incredibly fast unit testing framework.
It provides a rich set of assertions to make your tests clean and
readable.

minitest/spec is a functionally complete spec engine. It hooks onto
minitest/unit and seamlessly bridges test assertions over to spec
expectations.

minitest/benchmark is an awesome way to assert the performance of your
algorithms in a repeatable manner. Now you can assert that your newb
co-worker doesn't replace your linear algorithm with an exponential
one!

minitest/mock by Steven Baker, is a beautifully tiny mock object
framework.

minitest/pride shows pride in testing and adds coloring to your test
output. I guess it is an example of how to write IO pipes too. :P

minitest/unit is meant to have a clean implementation for language
implementors that need a minimal set of methods to bootstrap a working
test suite. For example, there is no magic involved for test-case
discovery.

    "Again, I can???t praise enough the idea of a testing/specing
     framework that I can actually read in full in one sitting!"

    -- Piotr Szotkowski

Changes:

### 2.9.1 / 2011-12-13

* 4 minor enhancements:

  * Added a ton of tests on spec error message output.
  * Cleaned up consistency of msg handling on unary expectations.
  * Improved error messages on assert/refute_in_delta.
  * infect_an_assertion no longer checks arity and better handles args.

* 1 bug fix:

  * Fixed error message on specs when 2+ args and custom message provided. (chastell)