Which queries did you try and execute?

I was using bool queries, but it can also be demonstrated with curl and query strings:

curl -XPOST http://127.0.0.1:9200/test_index/test -d '{"boolean_field":true}'
curl -XPOST http://127.0.0.1:9200/test_index/test -d '{"boolean_field":false}'
curl http://127.0.0.1:9200/test_index/test/_count?q=boolean_field:false
curl http://127.0.0.1:9200/test_index/test/_count?q=boolean_field:0
curl http://127.0.0.1:9200/test_index/test/_count?q=boolean_field:F
curl http://127.0.0.1:9200/test_index/test/_count?q=boolean_field:true
curl http://127.0.0.1:9200/test_index/test/_count?q=boolean_field:1
curl http://127.0.0.1:9200/test_index/test/_count?q=boolean_field:T

ok, found the problem. In any case, just a note, with your example above, you should issue a refresh after you index, so you verify what you indexed is now searchable. In any case, I will fix it for query string types, it should work for other queries, but if it doen't ping...

boolean values cannot be searched with expected queries, closed by 91aada2.

Forgot about the refresh, thanks! I just checked out the new version and it works with query strings and bool queries.