Merge branch 'master' into develop

CHANGES.md

+Synapse 1.5.1 (2019-11-06)
+==========================
+
+Features
+--------
+
+- Limit the length of data returned by url previews, to prevent DoS attacks. ([\#6331](https://github.com/matrix-org/synapse/issues/6331), [\#6334](https://github.com/matrix-org/synapse/issues/6334))
+
+
 Synapse 1.5.0 (2019-10-29)
 ==========================
 

changelog.d/6331.feature

-Limit the length of data returned by url previews, to prevent DoS attacks.

changelog.d/6334.feature

-Limit the length of data returned by url previews, to prevent DoS attacks.

debian/changelog

+matrix-synapse-py3 (1.5.1) stable; urgency=medium
+
+  * New synapse release 1.5.1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Wed, 06 Nov 2019 10:02:14 +0000
+
 matrix-synapse-py3 (1.5.0) stable; urgency=medium
 
   * New synapse release 1.5.0.

scripts-dev/build_debian_packages

@@ -20,11 +20,13 @@ from concurrent.futures import ThreadPoolExecutor
 DISTS = (
     "debian:stretch",
     "debian:buster",
+    "debian:bullseye",
     "debian:sid",
     "ubuntu:xenial",
     "ubuntu:bionic",
     "ubuntu:cosmic",
     "ubuntu:disco",
+    "ubuntu:eoan",
 )
 
 DESC = '''\

synapse/__init__.py

@@ -36,7 +36,7 @@ try:
 except ImportError:
     pass
 
-__version__ = "1.5.0"
+__version__ = "1.5.1"
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when