Parse failed error
Improved iqVersion code

including parsing and the version class.
s/buildDate/builtDate/
Record built date in version
Make ServiceDiscoveryManager.findServices() more robust

the method should not throw an exception if the discovery of the service
fails.
Merge branch 'master' into xep198
Fix bug in incrementHeight

which would reset height to zero if it was 2, instead of 2^32.
More SM predicate work, assure that we send a ack request with the default config