golang_renamer update for golang1.16

[malware-kitten]

It looks like an update for the project that golang_renamer.py is built on has an update for golang1.16

https://github.com/sibears/IDAGolangHelper/blob/master/GO_Utils/Gopclntab.py

Would it be possible to patch in the newer check_is_gopclntab16, rename16 functions and lookup16 data?