Include test-requirements in package (fixed #47).
Merging master into v1.3
Merge branch 'master' into release
Merge branch master into release
Version bump.
Ugh merge fail.
Merge branch 'master' of https://github.com/shazow/urllib3 into release
Merge branch master into release, with version bump.
Merge branch 'master' into release.

Preparing for v1.6.
Version bump: 1.5 -> 1.6
Merge branch 'master' into release.

2012 -> 2013.
CHANGES.
CHANGES.
Merge branch 'master' into release
CHANGES again. Messiest release merging ever.
add io.IOBase compatibility to HTTPResponse

Closes #182
add tests for HTTPResponse subclassing io.IOBase
Fix io test for py 3.x compatibility

Also some minor cleanup items
fix response tests for py 2.6
make sure isclosed part of HTTPResponse's closed property gets tested in 3.x