Started Prinz MLE
New MLE
tests
fix compile-time warning
Add default to cython
Refactoring MSM class
print statements
Ran futurize more
manual fixes
add two files
Merge pull request #225 from rmcgibbo/mslds-python3

MSLDS Python3
test with strings
more tests
lots of stuff
docstring
remove unused import
a couple of @mpharrigan's comments and WIP stuff
Fixes and tests
Found bug when Nan is in the input sequence
Fix handling of nans in input data