Use static instances for date/time/datetime types as well
Clean up some more of the nd::arrfunc construction
Add function typedef for resolving the arrfunc destination type
Rename instantiate_func to instantiate in the arrfunc structure
Implement the dst type resolution for lift_arrfunc
Rename the exposed "__call__" to "execute" to allow the new __call__
Remove ectx param from arrfunc operator() convenience functions
Change make_rolling_arrfunc to generate proper funcproto
Finish the type/shape resolution of make_rolling_arrfunc
Change slightly how the arrfunc prints
Merge pull request #49 from mwiebe/basics

Some work on the arrfunc basics