Update CHANGELOG with new version details

Added details of the 1.1.0 maintenance release to the CHANGELOG. This update includes the deprecation of Python 2.7 and all Python versions up to and including 3.6, due to their lack of support.

Author: Jochem Berends

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+## 1.1.0 (3JUL24)
+ * :shield: Maintenance release. Deprecation of python 2.7 and all python version upto and included 3.6 as these versions are out of support.
+
 ## 1.0.4 (26NOV19)
  * Maintenance release.
  * changed CI setup to use github actions. No end-user facing changes. #10