Clean up some docstrings
Make these examples consistent
Merge pull request #321 from alex/docstring-cleanup

Clean up some docstrings
don't modify params on parametrized tests

multiple backends receive the same params dicts, but we were modifying
them using pop.
use both kwargs and named args in lambdas for clarity
Raise UnsupportedAlgorithm when initing Hash()

Instead of just an AssertionError.
Merge pull request #323 from reaperhulk/fix-tests-multi-backend

Don't modify params dict on parametrized tests
Merge pull request #324 from public/unsupported-hash

Raise UnsupportedAlgorithm when initing Hash()
Raise UnsupportedAlgorithm when initing HMACs
Merge pull request #326 from public/unsupported-hmac-hash

Raise UnsupportedAlgorithm when initing HMACs
restrict gcm tags to a minimum of 4 bytes in length
add note regarding not truncating tags
doc updates
prose updates for GCM tag
a few more doc changes to gcm tag info
Merge pull request #327 from reaperhulk/gcm-lower-limit-tag

Restrict GCM tag length to 4+ bytes
A handful of cleanups and rewordings to the docs
Recommend that recipes include a version
English, how does it work?
Merge pull request #328 from alex/docs-cleanups

A handful of cleanups and rewordings to the docs