Fixes #14928
Change-Id: Id772eb623815cb2bb3e49de68a916762345a9dc1
Reviewed-on: https://go-review.googlesource.com/21531
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
runtime: add CallerFrames and Frames (CL 19869)
testing/quick: now generates nil values (CL 16470)
+net/http/httptest: ResponseRecorder supports trailer (CL 20047) (compat impact: issue 14928)
net/url: support query string without values (CL 19931)
net/textproto: permit all valid token chars in CanonicalMIMEHeaderKey input (CL 18725)
go/doc: add Unordered boolean to Example struct (CL 19280)