New release of unordered-containers

I've just uploaded a new version of the unordered-containers package, a package of fast hashing-based container types. Version 0.1.3.0 adds:

• the ability to take the union of two maps,
• lower memory overhead per key/value pair (contributed by Jan-Willem Maessen), and
• the beginning of a Data.HashSet module (contributed by Bryan O'Sullivan).

If you want to contribute, you can get the source from the git repository:

git clone https://github.com/tibbe/unordered-containers.git

Alternatively, just fork the project on GitHub.