diff --git a/changelog.d/.gitignore b/changelog.d/.gitignore
new file mode 100644
index 0000000000..f935021a8f
--- /dev/null
+++ b/changelog.d/.gitignore
@@ -0,0 +1 @@
+!.gitignore
diff --git a/changelog.d/2970.feature b/changelog.d/2970.feature
new file mode 100644
index 0000000000..5eb928563f
--- /dev/null
+++ b/changelog.d/2970.feature
@@ -0,0 +1 @@
+add support for the lazy_loaded_members filter as per MSC1227
diff --git a/changelog.d/3331.feature b/changelog.d/3331.feature
new file mode 100644
index 0000000000..e574b9bcc3
--- /dev/null
+++ b/changelog.d/3331.feature
@@ -0,0 +1 @@
+add support for the include_redundant_members filter param as per MSC1227
diff --git a/changelog.d/3350.misc b/changelog.d/3350.misc
new file mode 100644
index 0000000000..3713cd6d63
--- /dev/null
+++ b/changelog.d/3350.misc
@@ -0,0 +1 @@
+Remove redundant checks on who_forgot_in_room
\ No newline at end of file
diff --git a/changelog.d/3367.misc b/changelog.d/3367.misc
new file mode 100644
index 0000000000..1f21ddea48
--- /dev/null
+++ b/changelog.d/3367.misc
@@ -0,0 +1 @@
+Remove unnecessary event re-signing hacks
\ No newline at end of file
diff --git a/changelog.d/3415.misc b/changelog.d/3415.misc
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/changelog.d/3415.misc
diff --git a/changelog.d/3460.misc b/changelog.d/3460.misc
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/changelog.d/3460.misc
diff --git a/changelog.d/3514.bugfix b/changelog.d/3514.bugfix
new file mode 100644
index 0000000000..460fe24ac9
--- /dev/null
+++ b/changelog.d/3514.bugfix
@@ -0,0 +1 @@
+Don't generate TURN credentials if no TURN config options are set
diff --git a/changelog.d/3520.bugfix b/changelog.d/3520.bugfix
new file mode 100644
index 0000000000..9278cb3708
--- /dev/null
+++ b/changelog.d/3520.bugfix
@@ -0,0 +1 @@
+Correctly announce deleted devices over federation
diff --git a/changelog.d/3548.bugfix b/changelog.d/3548.bugfix
new file mode 100644
index 0000000000..38dc3b1232
--- /dev/null
+++ b/changelog.d/3548.bugfix
@@ -0,0 +1 @@
+Catch failures saving metrics captured by Measure, and instead log the faulty metrics information for further analysis.
diff --git a/changelog.d/3552.misc b/changelog.d/3552.misc
new file mode 100644
index 0000000000..709c3282b4
--- /dev/null
+++ b/changelog.d/3552.misc
@@ -0,0 +1 @@
+Release notes are now in the Markdown format.
diff --git a/changelog.d/3553.feature b/changelog.d/3553.feature
new file mode 100644
index 0000000000..77a294cb9f
--- /dev/null
+++ b/changelog.d/3553.feature
@@ -0,0 +1 @@
+Add metrics to track resource usage by background processes
diff --git a/changelog.d/3554.feature b/changelog.d/3554.feature
new file mode 100644
index 0000000000..b00397872c
--- /dev/null
+++ b/changelog.d/3554.feature
@@ -0,0 +1 @@
+Add `code` label to `synapse_http_server_response_time_seconds` prometheus metric
diff --git a/changelog.d/3555.feature b/changelog.d/3555.feature
new file mode 100644
index 0000000000..ea4a85e0ae
--- /dev/null
+++ b/changelog.d/3555.feature
@@ -0,0 +1 @@
+Add support for client_reader to handle more APIs
diff --git a/changelog.d/3556.feature b/changelog.d/3556.feature
new file mode 100644
index 0000000000..77a294cb9f
--- /dev/null
+++ b/changelog.d/3556.feature
@@ -0,0 +1 @@
+Add metrics to track resource usage by background processes
diff --git a/changelog.d/3559.misc b/changelog.d/3559.misc
new file mode 100644
index 0000000000..26df859e45
--- /dev/null
+++ b/changelog.d/3559.misc
@@ -0,0 +1 @@
+add config for pep8
diff --git a/changelog.d/3562.misc b/changelog.d/3562.misc
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/changelog.d/3562.misc
diff --git a/changelog.d/3570.bugfix b/changelog.d/3570.bugfix
new file mode 100644
index 0000000000..cec5158a99
--- /dev/null
+++ b/changelog.d/3570.bugfix
@@ -0,0 +1 @@
+Fix potential stack overflow and deadlock under heavy load
\ No newline at end of file
diff --git a/changelog.d/3571.misc b/changelog.d/3571.misc
new file mode 100644
index 0000000000..8908324e68
--- /dev/null
+++ b/changelog.d/3571.misc
@@ -0,0 +1 @@
+Merge Linearizer and Limiter
diff --git a/changelog.d/3572.misc b/changelog.d/3572.misc
new file mode 100644
index 0000000000..8908324e68
--- /dev/null
+++ b/changelog.d/3572.misc
@@ -0,0 +1 @@
+Merge Linearizer and Limiter
diff --git a/changelog.d/3577.misc b/changelog.d/3577.misc
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/changelog.d/3577.misc
diff --git a/changelog.d/3579.misc b/changelog.d/3579.misc
new file mode 100644
index 0000000000..2374dc0c44
--- /dev/null
+++ b/changelog.d/3579.misc
@@ -0,0 +1 @@
+Lazily load state on master process when using workers to reduce DB consumption
diff --git a/changelog.d/3581.misc b/changelog.d/3581.misc
new file mode 100644
index 0000000000..2374dc0c44
--- /dev/null
+++ b/changelog.d/3581.misc
@@ -0,0 +1 @@
+Lazily load state on master process when using workers to reduce DB consumption
diff --git a/changelog.d/3582.misc b/changelog.d/3582.misc
new file mode 100644
index 0000000000..2374dc0c44
--- /dev/null
+++ b/changelog.d/3582.misc
@@ -0,0 +1 @@
+Lazily load state on master process when using workers to reduce DB consumption
diff --git a/changelog.d/3584.misc b/changelog.d/3584.misc
new file mode 100644
index 0000000000..2374dc0c44
--- /dev/null
+++ b/changelog.d/3584.misc
@@ -0,0 +1 @@
+Lazily load state on master process when using workers to reduce DB consumption
diff --git a/changelog.d/3586.misc b/changelog.d/3586.misc
new file mode 100644
index 0000000000..e853e2481b
--- /dev/null
+++ b/changelog.d/3586.misc
@@ -0,0 +1 @@
+Fixes and optimisations for resolve_state_groups
diff --git a/changelog.d/3587.misc b/changelog.d/3587.misc
new file mode 100644
index 0000000000..75a3479910
--- /dev/null
+++ b/changelog.d/3587.misc
@@ -0,0 +1 @@
+Improve logging for exceptions when handling PDUs
\ No newline at end of file
diff --git a/changelog.d/3590.misc b/changelog.d/3590.misc
new file mode 100644
index 0000000000..0f1688fd0f
--- /dev/null
+++ b/changelog.d/3590.misc
@@ -0,0 +1 @@
+Add some measure blocks to persist_events
diff --git a/changelog.d/3591.misc b/changelog.d/3591.misc
new file mode 100644
index 0000000000..f0137766a0
--- /dev/null
+++ b/changelog.d/3591.misc
@@ -0,0 +1 @@
+Fix some random logcontext leaks.
\ No newline at end of file
diff --git a/changelog.d/3592.misc b/changelog.d/3592.misc
new file mode 100644
index 0000000000..60129569c2
--- /dev/null
+++ b/changelog.d/3592.misc
@@ -0,0 +1 @@
+Speed up calculating state deltas in persist_event loop
diff --git a/changelog.d/3595.misc b/changelog.d/3595.misc
new file mode 100644
index 0000000000..85903504cc
--- /dev/null
+++ b/changelog.d/3595.misc
@@ -0,0 +1 @@
+Attempt to reduce amount of state pulled out of DB during persist_events
diff --git a/changelog.d/3597.feature b/changelog.d/3597.feature
new file mode 100644
index 0000000000..ea4a85e0ae
--- /dev/null
+++ b/changelog.d/3597.feature
@@ -0,0 +1 @@
+Add support for client_reader to handle more APIs
diff --git a/changelog.d/3601.bugfix b/changelog.d/3601.bugfix
new file mode 100644
index 0000000000..1678b261d0
--- /dev/null
+++ b/changelog.d/3601.bugfix
@@ -0,0 +1 @@
+Fix failure to persist events over federation under load
diff --git a/changelog.d/3604.feature b/changelog.d/3604.feature
new file mode 100644
index 0000000000..77a294cb9f
--- /dev/null
+++ b/changelog.d/3604.feature
@@ -0,0 +1 @@
+Add metrics to track resource usage by background processes
diff --git a/changelog.d/3605.bugfix b/changelog.d/3605.bugfix
new file mode 100644
index 0000000000..786da546eb
--- /dev/null
+++ b/changelog.d/3605.bugfix
@@ -0,0 +1 @@
+Fix updating of cached remote profiles
diff --git a/changelog.d/3606.misc b/changelog.d/3606.misc
new file mode 100644
index 0000000000..f0137766a0
--- /dev/null
+++ b/changelog.d/3606.misc
@@ -0,0 +1 @@
+Fix some random logcontext leaks.
\ No newline at end of file
diff --git a/changelog.d/3607.bugfix b/changelog.d/3607.bugfix
new file mode 100644
index 0000000000..7ad64593b8
--- /dev/null
+++ b/changelog.d/3607.bugfix
@@ -0,0 +1 @@
+Fix 'tuple index out of range' error
\ No newline at end of file
diff --git a/changelog.d/3609.misc b/changelog.d/3609.misc
new file mode 100644
index 0000000000..5b9566d076
--- /dev/null
+++ b/changelog.d/3609.misc
@@ -0,0 +1 @@
+Fix a documentation typo in on_make_leave_request
diff --git a/changelog.d/3610.feature b/changelog.d/3610.feature
new file mode 100644
index 0000000000..77a294cb9f
--- /dev/null
+++ b/changelog.d/3610.feature
@@ -0,0 +1 @@
+Add metrics to track resource usage by background processes
diff --git a/changelog.d/3613.misc b/changelog.d/3613.misc
new file mode 100644
index 0000000000..d9378f6b49
--- /dev/null
+++ b/changelog.d/3613.misc
@@ -0,0 +1 @@
+Remove some redundant joins on event_edges.room_id
diff --git a/changelog.d/3614.misc b/changelog.d/3614.misc
new file mode 100644
index 0000000000..356f28471e
--- /dev/null
+++ b/changelog.d/3614.misc
@@ -0,0 +1 @@
+Stop populating events.content
diff --git a/changelog.d/3616.misc b/changelog.d/3616.misc
new file mode 100644
index 0000000000..04629faa36
--- /dev/null
+++ b/changelog.d/3616.misc
@@ -0,0 +1 @@
+Update the /send_leave path registration to use event_id rather than a transaction ID.
|
