Add testing for pytables light dd
Implement pytables ligth
Implement np.ndarray <- tables.Table for time64col
Flesh out testing
Return if there are no time64 fields
Test from ndarray to pytables
Sort types function
First pass
Move to data
New test_pytables for data
Infer using individual columns
Move data related tests to blaze/data/tests/test_pytables.py
Debugging
Remove unused imports
sort_dtype_items is more useful than forcing a dtype
PyTables into for Table instances and type(Table)
Export PyTables function
Open in append mode
Need the subshape
Use less toolz