Pre-release V4.0.c, further simple context diagram robustness

This release had further enhancements to initial context diagram support and related elements. The simplified context diagram support is intended to make context diagram creation easier with a dialog that enables you to add events that flow between nodes.

Change log is:
#282 20-MAY-2021: Fix issue with requirement mover caused by renaming of the package new term stereotypes (F.J.Chadburn)
#283 03-JUN-2021: Initial re-factoring to get context to be taken into account for helper invocation and logging (F.J.Chadburn)
#284 03-JUN-2021: Improve thread safe support for executable mbse requirements analysis helpers (F.J.Chadburn)
#285 04-JUN-2021: Further purging of old logger to enable thread safe operation across multiple Rhapsody instances (F.J.Chadburn)
#286 04-JUN-2021: Moved Gateway right-click menus into separate Gateway Helper sub-menu to remove clutter (F.J.Chadburn)
#287 07-JUN-2021: Add initial profile support for External Signals Package with auto-flow of events (F.J.Chadburn)
#288 09-JUN-2021: Add new MBSE menu to create a context diagram structure including auto-populate from actor list (F.J.Chadburn)
#289 09-JUN-2021: Refinement of profile property setting checks to autoset properties when populating package structure (F.J.Chadburn)
#290 09-JUN-2021: Move the setup project command to the root right-click menu rather than the requirements analysis menu (F.J.Chadburn)
#291 11-JUN-2021: Add robustness to the auto-moving of Events plus a differentiated property to turn on/off (F.J.Chadburn)
#292 11-JUN-2021: Get context diagram auto creation to set graph nodes to structured rather than specification view (F.J.Chadburn)
#293 14-JUN-2021: Fix so that create requirement on an action still works (F.J.Chadburn)
#294 14-JUN-2021: Update profile version number and profile date stamp (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.