Fix location parsing

It was previously pretty stupid, doing stuff like always leaving the
first element even if that made no sense. Now each element is evaluated
in the context of its neighbors which does a much better job of removing
stragglers.

Still probably won't handle multiple blocks belonging to the same root
domain separated by repeated chunks of other stuff, but that's an issue
for another day.
Removing unused specimen
Merge pull request #5 from tivac/location-fixes

Location fixes