Initial commit

This includes most of the code from the NList project. However, it
eliminates the comparer builders (now found at
http://github.com/jehugaleahsa/comparerextensions) and the Formatter
(now found at http://github.com/jehugaleahsa/mustache-sharp). All of the
namespaces and even some of the class names are different. I might do
another major refactoring to make the Sublist methods extension methods
(involving renaming).