Topic: Consolidating for superfetation

The bulk update request #12243 is pending approval.

create alias superfecundation (15) -> superfetation (79)
create alias impregnation_while_pregnant (15) -> superfetation (79)
create alias stacked_impregnation (39) -> superfetation (79) # has blocking transitive relationships, cannot be applied through bur

Reason: Consolidating multiple tags that all cover the same idea: A character being impregnated while already pregnant, resulting in multiple pregnancies progressing simultaneously

NOTE: I also considered having these tags to be consolidated under stacked_impregnation instead. It already has a more fleshed out tag description and feels slightly more intuitive, however given that superfetation is the proper real-world name for this, I'll leave it up to the site admins on which alias to go with.

you'll need to unimply impregnation from stacked_impregnation first for the BUR to pass

unimplication in topic #59622

the usage of superfecundation dosn't seem to fully conform with the other tags. it appears to be mostly used for a character's offspring having multiple sires regardless of current pregnancy status, whereas the other tags all seem to be characters being impregnated whilst already being visibly pregnant.