There were four errors to fix:
1. The checks for defaulted direction were not implemented in the predicate concept.
2. Had to delete an obsolete and undefined operation enum.
3. A factory was passing a boolean in place of an integer.
4. Some of the factory tests are not compiling correctly when linking in the full source (with CK_EXPERIMENTAL_BUILDER=ON), so I commented them out.
ea6e4fcbbc