Each matcher that we currently have in the project should have a direct accessor in the appropriate expectation so that we have ability to use:
ut.expect(1).to_be_between(0,2)
ut.expect(1).not_to_be_between(0,2)
ut.expect(1).not_to_equal(0)
etc.

• add shortcuts for matchers and negated matchers
• update expectations documentation with shortcuts
• change all existing unit tests to use shortcuts, to provide better code coverage
• add missing unit tests for negated shortucts (looking at the code coverage)