Updated changelog for v0.4.0 minor release

CHANGELOG.md

@@ -1,3 +1,30 @@
+## v0.4.0 ##
+- Long conversation support
+- Account and consistency update
+  - Account and identity system upgrades
+  - Eventual consistency works better now
+  - Speed improvements
+  - High speed messaging torture test passes
+- Multiple accounts support
+  - start of recovery key UI
+  - multiple accounts support
+  - many bugfixes
+  - improved watches
+  - ui improvements
+- UI work
+  - Support away/busy/free state
+  - Support away/busy/free messages
+  - Start of UI for auto-away feature (incomplete)
+- *Community Contributions Shoutouts*
+  - @ethnh
+  - @sajattack
+  - @jasikpark
+  - @kyanha
+  - @lpmi-13
+  - @rivkasegan
+  - @SalvatoreT
+  - @hweslin
+
 ## v0.3.0 ##
 - Beginning of changelog
 - See commits/merges for history prior to v0.3.0