release 2.0.5.2

This is perhaps one of the most significant releases in a long while, as it makes it much easier to work with unstructured data. I plan to make good use of this capability to manage all my work-related email.

I did change the order of items displayed however. Children are grouped together rather than intermixed with topic matches, named topics and included topics. This was done because otherwise the next and prev commands would have become far less intuitive.