update the changelog

Changelog.md

@@ -2,8 +2,13 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.11] - 2023-04-18
+- Added filtering mechanism for NRENs and years
+- Added footer
+- Changed navigation header to match geant.org
+
 ## [0.10] - 2023-04-12
-- TODO: Saket will fill this in later
+- Added first version of the charging mechanism page
 
 ## [0.9] - 2023-03-21
 - Changed survey-publisher-2022 to function with newer sqlalchemy versions