bump changelog for v1.1.0 release

Author: sduchesneau

CHANGELOG.md

@@ -4,6 +4,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). See [MAINTAINERS.md](./MAINTAINERS.md)
 for instructions to keep up to date.
 
+## v1.1.0
+
+* Bumped all firehose dependencies (from old versions)
+* Logs are now more verbose by default output to STDERR
+* Removed reader-node-merge-threshold-block-age (no more merging directly in the reader node, only the merger does it now)
+* New 'ready' stat in prometheus for services
 
 ## v1.0.0