Pre-release V4.0.g, allow for modeling of a software layer in the same project as the SysML one

This release had general refinements plus some DSL concepts to allow modeling of a software layer in the same project as the SysML one.

This was the change log:
#347 30-JUL-2021: ExecutableMBSE: Add ability to select a system block when creating system usage for context diagram (F.J.Chadburn)
#348 10-AUG-2021: ExecutableMBSE: Allow System Block and Subsystem Blocks to own Value Properties (F.J.Chadburn)
#349 10-AUG-2021: ExecutableMBSE: Make animation more compact by turning off animation of chElapsedTime events in BasePkg (F.J.Chadburn)
#350 10-AUG-2021: ExecutableMBSE: Initial enhancement to meta-model to support richer software design concepts, e.g., C++ class and a software bdd (F.J.Chadburn)
#351 11-AUG-2021: ExecutableMBSE: Turn off hovering toolbar by default when setting up the project properties (F.J.Chadburn)
#352 11-AUG-2021: ExecutableMBSE: Allow containment of Rhapsody components by software design and logical system packages (F.J.Chadburn)
#353 11-AUG-2021: ExecutableMBSE: Resolve some tab issues with C++ classes and allow them to own value properties (F.J.Chadburn)
#354 11-AUG-2021: ExecutableMBSE: Add Satisfaction, Problem and Rationale to toolbar for the software design and logical system bdds (F.J.Chadburn)
#355 11-AUG-2021: ExecutableMBSE: Add an Internal Block Diagram - Software diagram to support modeling a structured C++ class (F.J.Chadburn)
#356 11-AUG-2021: ExecutableMBSE: Fix to use FunctionalAnalysisSettings_ExecutableMBSE to get traced element panels to find correct assembly block (F.J.Chadburn)
#357 11-AUG-2021: ExecutableMBSE: Some general refactoring to simplify, ease debugging, and improve performance (F.J.Chadburn)
#358 19-AUG-2021: ExecutableMBSE: Allow for panel diagrams in the software design package structure menus (F.J.Chadburn)
#359 19-AUG-2021: ExecutableMBSE: Make ElapsedTimeBlock::elapsedTime attribute a value property rather than an attribute to reflect newer SysML profile (F.J.Chadburn)
#360 19-AUG-2021: ExecutableMBSE: Ensure that copying of activity diagrams retains the textual activity diagram stereotype (F.J.Chadburn)
#361 23-AUG-2021: ExecutableMBSE: Fix the CreateIncomingEventPanel so that it works in white box modeling when no actors are chosen (F.J.Chadburn)

I chose not push this release to Github though, rather keep it for select customers I'm working with while it gets developed.