See merge request !98

- Added description to CommandLine

JSON integer v.s double

See merge request !95

radixplot removal in favor of qcpcontext.

See merge request !94

Aptool fortification

See merge request !93

Json parser

See merge request !92

- fixed some unit tests (updated some error messages, commented out some obselete tests)

- re-enabled all of the roundtrip*.json tests

- changed handling of parse errors to use boolean returns instead of using is_null() since using the later causes "null" literals to fail
- fixed a few parser bugs found by unit tests
- fixed a bug in unit test code causing false negatives
- now allowing one trailing comma in arrays and objects

Fortify changes.

See merge request !90