Changes:

 - Compat with gevent 1.1
 - Tools for working with futures

Changes:

 - Compat with gevent 1.1
 - Tools for working with futures

Small optimizations for redis & generic batch functions.

Fix an issue with context propagation; release 0.4.1

Set of changes:

 - Fix *_unordered; add iwait & wait.
 - Add may_block context manager.
 - Add utils.Pool to limit concurrent work.

Release 0.3.1.

Add changelog.

Beef up redis tests, fix bug in pipeline.

Gitignore.