Contentment 0.3.1 Released

This is a pretty minor release that adds the Security Monitor feature. This is basically a session-based security system. There is a default implementation (Contentment::Monitor) and a test-implementation (Contentment::Monitor::Open). The default denies everything and the test-implementation allows everything. Both are bad ideas, but serve their respective purposes.

The next release will likely contain a simple demo as Contentment begins to get useful. The next major focus is going to be link management and presentation. This will probably require a custom security monitor and some interaction with Axkit (http://axkist.org).