add color and dev network points to changelog (#1257)

Signed-off-by: Ratan Rai Sur <ratan.r.sur@gmail.com>

CHANGELOG.md

@@ -9,13 +9,16 @@ on `--privacy-onchain-groups-enabled`. [\#1222](https://github.com/hyperledger/b
 ### Additions and Improvements
 
 * HTTP/2 is enabled for JSON-RPC Http API over TLS. [\#1145](https://github.com/hyperledger/besu/pull/1145)
-
+* Color output in consoles. It can be disabled with `--color-enabled=false`
 * Add compatibility with ClusterIP services for the Kubernetes Nat Manager  [\#1156](https://github.com/hyperledger/besu/pull/1156)
 
 ### Bug fixes 
 
-- Fix synchronization timeout issue when the blocks were too large [\#1149](https://github.com/hyperledger/besu/pull/1149)
- 
+* When the default sync mode was changed to fast sync for named networks,
+there was one caveat we didn't address. The `dev` network should've been full sync by default.
+This has now been fixed.
+* Fix synchronization timeout issue when the blocks were too large [\#1149](https://github.com/hyperledger/besu/pull/1149)
+
 ### Known Issues