Split assertions from unbounded_range, all tests passed.

6 tests, 49 assertions, 0 failures, 0 errors, 0 skips
Make sure Examples is included into model class.

8 tests, 29 assertions, 0 failures, 7 errors, 0 skips
Split assertion tests into separate file.
Comment out debugging puts and fails.
Include default assertions and examples.
Factor out test environment
Watch out for cut and paste.
Include examples in assertion augmented class.
Move class idenities into Constants modules
Rename TestCases to Examples
Possibly useful Beyond Compare settings
Remove comments abd add test.
Proposed new assertion
More rename TestCases to Examples
Standardize module
Assertions that pass.
Move case code from RegexpParse to RegexpTree

RegexpTree Subtypes visible
{postfix, branch}_{operator, expression} tests pass
Standardize assertion file