add QUIC 37 to supported versions

fixes #375
Chrome tests are disabled for QUIC 37, since the Chrome version in the
docker image doesn’t support this version yet.

protocol/version.go

@@ -21,7 +21,7 @@ const (
 // SupportedVersions lists the versions that the server supports
 // must be in sorted order
 var SupportedVersions = []VersionNumber{
-	Version35, Version36,
+	Version35, Version36, Version37,
 }
 
 // SupportedVersionsAsTags is needed for the SHLO crypto message

protocol/version_test.go

@@ -15,11 +15,11 @@ var _ = Describe("Version", func() {
 	})
 
 	It("has proper tag list", func() {
-		Expect(SupportedVersionsAsTags).To(Equal([]byte("Q035Q036")))
+		Expect(SupportedVersionsAsTags).To(Equal([]byte("Q035Q036Q037")))
 	})
 
 	It("has proper version list", func() {
-		Expect(SupportedVersionsAsString).To(Equal("36,35"))
+		Expect(SupportedVersionsAsString).To(Equal("37,36,35"))
 	})
 
 	It("recognizes supported versions", func() {