Fixed 5 failing tests due to list(set(... operations in ParseResults.__init__

[ianozsvald]

5 of the unit tests were failing for me, they were all caused by the list(set(... operations which destroyed ordering in ParseResults.init, also the list(set(... operation on @reply was destructive as the reply was a string not a list of strings (so you got an unordered set of characters). These are fixed in my fork, this is my first ever pull request, I hope I get the process right.

I've also removed lots of non-pep8 whitespace in tests.py and ttp.py.