initial commit
included missing files
fixed build scripts and added usage instructions
added simulation example
Made compatible with Python 2.6 and removed pytz dependency for Python2
Made imports compatible with Python 2 and 3.4
Fixes #20 and #28
Got rid of pytz dependency (closes #29) and fixed tests with regard to unicode so they run on Python 3.2
Fixes #16 - additional None check when turning a list into a list of list
extended none test for none and list of none
Fixes #15 handling of scalar np.nan
Made datetime objects from Excel timezone naive