#19

Is your feature request related to a problem? Please describe.

Relating to #278, the problem is that yaml file schemas don't accept the value str for pandas_dtype argument.

Describe the solution you'd like
Add the "str" string alias to PandasDtype.from_str_alias, which should map onto the `Obje

Code coverage should be added to the Travis config (perhaps the cabal file and/or the stack options need to be changed in order to account for hpc coverage generation); currently in Travis there is only a project key.
This tool uploads hpc coverage reports to codecov.io .

Add DateTime and similar

• Heidi instances
• lenses