Modify inserting to Keep GraphID

Closes #97 (closed) Always keeps Graph_IDs when using ( insert_operation(), insert_operation_after(), insert_operation_before() ). Maybe a flag can be used to configure keeping the Graph_ID:s, giving the user flexibility.

changed milestone to %Summer 2024

added Signal flow graph label

added 5 commits

• 149bf7f4...bbdda836 - 4 commits from branch master
• 88da1613 - Modify inserting to Keep_GraphID

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I'll try this next week, but I think it would be good to add a test for this. I have some ideas, but too long to write now...

approved this merge request

merged