Generics

Collection of links and notes collected while updating Staticcheck to support type parameters (generics). These are mostly gotchas and expert explanations that cleared up my confusion.

• Methods on generic types need special considerations when consuming go/types.Info: https://github.com/golang/go/issues/51184
• Interfaces are abstract types that define type sets, and the meaning of being comparable: griesemer's replies in https://github.com/golang/go/issues/50646
• Type parameters are interfaces: https://go-review.googlesource.com/c/go/+/359016/
• Helper package for analyzing generics and maintaining compatibility with Go 1.17: https://pkg.go.dev/golang.org/x/exp/typeparams
• Go 1.18 will likely be more restrictive than future versions with regard to permitted uses of generics