Python 3 compatibility, testing using tox

Cleanup of keys to align with logstash

Change-Id: Iddd09deb479ee6f402a915de0267a0e93497778b
diff --git a/VERSION b/VERSION
index 728d00f..a3df0a6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.8.0-dev0
+0.8.0