Ad change log

Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>

CHANGELOG.md

@@ -20,9 +20,10 @@ Accepted into CNCF:
 
 ### Added
 
+- [#1478](https://github.com/thanos-io/thanos/pull/1478) Thanos components now exposes gRPC server metrics as soon as server starts, to provide more reliable data for instrumentation.
 - [#1378](https://github.com/thanos-io/thanos/pull/1378) Thanos Receive now exposes `thanos_receive_config_hash`, `thanos_receive_config_last_reload_successful` and `thanos_receive_config_last_reload_success_timestamp_seconds` metrics to track latest configuration change
-- [#1268](https://github.com/thanos-io/thanos/pull/1268) Thanos Sidecar added support for newest Prometheus streaming remote read added [here](https://github.com/prometheus/prometheus/pull/5703). This massively improves memory required by single 
-  request for both Prometheus and sidecar. Single requests now should take constant amount of memory on sidecar, so resource consumption prediction is now straightforward. This will be used if you have Prometheus `2.13` or `2.12-master`.   
+- [#1268](https://github.com/thanos-io/thanos/pull/1268) Thanos Sidecar added support for newest Prometheus streaming remote read added [here](https://github.com/prometheus/prometheus/pull/5703). This massively improves memory required by single
+  request for both Prometheus and sidecar. Single requests now should take constant amount of memory on sidecar, so resource consumption prediction is now straightforward. This will be used if you have Prometheus `2.13` or `2.12-master`.
 - [#1358](https://github.com/thanos-io/thanos/pull/1358) Added `part_size` configuration option for HTTP multipart requests minimum part size for S3 storage type
 - [#1363](https://github.com/thanos-io/thanos/pull/1363) Thanos Receive now exposes `thanos_receive_hashring_nodes` and `thanos_receive_hashring_tenants` metrics to monitor status of hash-rings
 - [#1395](https://github.com/thanos-io/thanos/pull/1395) Thanos Sidecar added `/-/ready` and `/-/healthy` endpoints to Thanos sidecar.
@@ -39,7 +40,7 @@ Accepted into CNCF:
   - [BUGFIX] prometheus_tsdb_compactions_failed_total is now incremented on any compaction failure. tsdb#613
   - [BUGFIX] PromQL: Correctly display {__name__="a"}.
 - [#1338](https://github.com/thanos-io/thanos/pull/1338) Thanos Query still warns on store API duplicate, but allows a single one from duplicated set. This is gracefully warn about the problematic logic and not disrupt immediately.
-- [#1385](https://github.com/thanos-io/thanos/pull/1385) Thanos Compact exposes flag to disable downsampling `downsampling.disable`. 
+- [#1385](https://github.com/thanos-io/thanos/pull/1385) Thanos Compact exposes flag to disable downsampling `downsampling.disable`.
 
 ### Fixed