modified:   corpus.py
- reading a corpus from now always creates tuples even is no separator
  is given
modified:   automaton.py
- dump repr(tuple) emissions and read them back with eval()
modified:   create_baseline_automaton.py
- added a main() and now uses new emissions (always tuple)
modified:   corpus.py
- simplified reading and "EPSILON" is added where empty alphabet symbol
  found
modified:   create_3state_wfsa.py
- uses new corpus reading, new emissions and everything
- now state names in new fsa-s contain their level in the automaton, and
  is not an index what is always 0
modified:   automaton.py
- "".join() useless in create_from_alphabet, now an alphabet is always
  an 1 or n length string
- handle one-length morphemes
modified:   create_3state_wfsa.py
- bugfix. if->elif
modified:   learner.py
removed one logging.info
modified:   automaton.py
probability_of_string_in_state changed to work with multiple emits
modified:   exp/exp01.py
- we don't need unigram_tuple_corpus anymore