I am writing a swift module called Multiset. I based it on Set.swift which is part of the swift standard library so there’s a reasonable amount of code in it which is clearly comes from there. I want to share my Multiset implementation on github to be used freely but not sure what license to use. The Swift’s Standard library is under Apache 2. I’ve read around it a bit and am thinking to use Apache 2 as well but also I think could use MIT. I’d appreciate some guidance. Thanks