add first pass at support
reduce line lengths
refactor support, refine, relate to all use _relate method
add validation to support and refine
add support and refine tests
modify _validate_row to validate python datatypes
fix formatting errors
clean up encoding flow in preql
add omitted be in support error message
add kerword arguments in test_refine_with_conditions for readability
be robust to conditioning_row=None in _relate
enforce disjointness in related queries
change query math seed
Merge pull request #75 from priorknowledge/support

Support