v1.5.1 is compatible with ES 1.4.0.Beta1+ but unit testing doesn't like it
v1.5.1 is compatible with ES 1.4.0.Beta1+ but unit testing doesn't like it

JUnit complains about 5 leaked zombi threads, but unit tests otherwise
pass successfully.
Manual testing is successful too.

meltwater/elasticsearch-analysis-combo,antonha/elasticsearch-analysis-combo,yakaz/elasticsearch-analysis-combo