Update changelog for v3

CHANGELOG.md

@@ -1,5 +1,27 @@
 # Change Log
 
+## v3
+
+### Implemented enhancements:
+
+- Make clients in map start at a random angle
+- On statistics page: show how many nodes supply geoinformation
+- Allow additional statistics (global and per node) configured in config.js
+- Improve node count information (total, online, clients, ...)
+- Show hardware model in link infobox
+- Introduce maxAge setting
+- Graph: show VPN links in grayscale
+
+### Removed features:
+
+- Don't show contact information in node lists
+
+### Fixed bugs:
+
+- Fixed off-by-one when drawing clients
+- Match labels order to node order in map
+- Statistics: count only nodes that are present
+
 ## v2
 
 ### General changes: