It messes things up. You can't do
using Toml;
at the moment. See this article for reference:
http://blogs.msdn.com/b/ericlippert/archive/2010/03/09/do-not-name-a-class-the-same-as-its-namespace-part-one.aspx
Obviously this will be a big breaking change, but maybe it's best to get it over with (and bump up the major version no.)?