deleted:    round_freqs.py
obsolete
modified:   automaton.py
- some options are working now
  - emitfile
  - initial_transition when used with emitfile
- some options' descreption are more understandable, one hopes
modified:   corpus.py
- minimal changes in comments
modified:   automaton.py
- read_from_corpus option works
- normalize_node now accepts node instead of dict of edges
- check_sum is now member method instead of static, and expects node
  instead of dict of edges
new file:   tst/corpus.sample
new file:   tst/emitfile.sample
new file:   tst/init_trans.sample
- 3 test files that shows how to use some options
modified:   automaton.py
- to option "initial_transitions" tst/init_trans.sample added to the
  help message
modified:   automaton.py
- error message when using -c and -I together
modified:   automaton.py
- options are reordered based on how useful they are, and semantically
  grouped together
modified:   code.py
- added create to LinearCode
- added small option parser to create LinearCode and LogLinCode
  (maybe not yet totally understable, but working.)