Release v0.14.0 (#614)

This release contains a couple fixes and the new Batch Publishing
feature.

- #607 Batch Publishing. Useful if you are publishing a group of related
messages at once
- #612 Send IDONTWANT before initial publish. Useful when many nodes may
publish the same message at once.
- #609 Avoid sending an extra "IDONTWANT" to the peer that just sent you
a message.
- #615 10x faster rpc splitting.

Author: MarcoPolo

version.json

@@ -1,3 +1,3 @@
 {
-  "version": "v0.13.0"
+  "version": "v0.14.0"
 }