GitLab

* Added greater and less operators

* Fixed ops_test.cpp

* Set commutative to false for less, greater

* Refactored parse_equal/less/greater into parse_compare_op

* Removed unnecessary function attributes() from greater.hpp/less.hpp

* Added op_name arguments

* Removed local settings

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* Missing comma

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* Missing space
Co-authored-by: Paul Fultz II <pfultz2@yahoo.com>