add HISTORY entries for recent changes

Kriechi · pgjones · commit 51113e70103a · 2020-07-27T18:08:28.000+01:00
diff --git a/HISTORY.rst b/HISTORY.rst
@@ -4,6 +4,10 @@ Release History
 6.0.0dev0
 ---------
 
+**Other Changes**
+
+- Drop support for Python 2.7, 3.4, 3.5, pypy and support 3.8.
+
 5.2.0 (2019-01-18)
 ------------------
 
diff --git a/test/http2-frame-test-case b/test/http2-frame-test-case
@@ -0,0 +1 @@
+Subproject commit 5c67db0d4d68e1fb7d3a241d6e01fc04d981f465

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	`1`	`+Subproject commit 5c67db0d4d68e1fb7d3a241d6e01fc04d981f465`