Clean up testing
Remove comment
Remove unused variable
Remove xfail from columnwise tests
Clean up some tests
Implement projection and ColumnWise for PyTables
Test top-level blaze reductions
Bug in ColumnSyntaxMixin rtruediv
Add TrueDiv operator to deal with differences in Python versions
Implement generic column expressions for pytables compute
Add scalar operations tests
Raise NotImplementedError because of numexpr
Add initial naive sort implementation
TrueDiv was a bad idea
Test basic scalar ops
Use truediv because that is how blaze operators implement division
Test for sorting with PyTables indexes
Call read_sorted to take advantage of PyTables indexes
Let the numexpr error bubble up
Keep the ColumnWise logic specialized