[unrelated] Allow ResourceSet-less *.oclas to be saved
[unrelated] Correct typo
[unrelated] Fix save as pivot for common Root
[451883] Ensure proxies resolved before URI chnage
[451883] Flatten to single line for Resource.Diagnostic
[451883] Update to new xmi:id when unstable and changed
[451883] Resolve all proxies before assigning xmi:ids