Merge pull request #991 from lightninglabs/0-4-0-rc2

build: bump version to v0.4.0-alpha.rc2

Author: Roasbeef

version.go

@@ -52,7 +52,7 @@ const (
 
 	// AppPreRelease defines the pre-release version of this binary.
 	// It MUST only contain characters from the semantic versioning spec.
-	AppPreRelease = "rc1"
+	AppPreRelease = "rc2"
 
 	// GitTagIncludeStatus indicates whether the status should be included
 	// in the git tag name.