design: type parameters: type lists don't imply methods
design: type parameters: type lists don't imply methods

Change-Id: If45d9b9b75ca2cda1feb4a9ba645648b2e35763e
Reviewed-on: https://go-review.googlesource.com/c/proposal/+/250377
Reviewed-by: Robert Griesemer <a6752097faebf1f02d80107d77a9be009089afe3@golang.org>

golang/proposal,golang/proposal