Bump version to v0.4.0 (#104)

Author: feedmeapples

headers/headers.go

@@ -17,7 +17,7 @@ const (
 const (
 	ClientNameCLI = "temporal-cli"
 
-	CLIVersion = "0.3.0"
+	CLIVersion = "0.4.0"
 
 	// SupportedServerVersions is used by CLI and inter role communication.
 	SupportedServerVersions = ">=1.0.0 <2.0.0"