Bump version to v0.4.0.

[#101705970]

Signed-off-by: David Wadden <[email protected]>

Author: crawsible

RELEASE_NOTES.md

@@ -1 +1,10 @@
-v4.0 Release Notes
+# v0.4.0
+
+## Introducing TCP Router
+
+- #172: Tcp router PR [[#101089176](https://www.pivotaltracker.com/story/show/101089176)]
+- developer should be able to follow CLI docs for ltc to create an LRP with specified external ports and verify that tcp requests are routed to the app [[#94628548](https://www.pivotaltracker.com/story/show/94628548)]
+- developer should be able to verify that when an LRP is created using Diego API deployed with Lattice on local vagrant, and external ports are declared, that tcp requests are routed to the LRP [[#98237152](https://www.pivotaltracker.com/story/show/98237152)]
+- developer should be able to verify that when an LRP is created using Diego API deployed with Lattice on local vagrant, and external ports are declared, that tcp-emitter receives events from Diego  [[#98237046](https://www.pivotaltracker.com/story/show/98237046)]
+- Operator should be able to verify that if HAProxy process fails, it is automatically restarted [[#100228278](https://www.pivotaltracker.com/story/show/100228278)]
+

Version

@@ -1 +1 @@
-v0.3.3
+v0.4.0