Fixed IntMap.
Fixed IntMap.

closes #65

EsotericSoftware/kryo,magro/kryo,EsotericSoftware/kryo,romix/kryo,EsotericSoftware/kryo,EsotericSoftware/kryo,tomdkt/kryo,childRon/kryo,magro/kryo,tomdkt/kryo,irudyak/kryo,mikee805/kryo,narahari92/kryo,xfrendx/kryo,hierynomus/kryo,narahari92/kryo,hepin1989/kryo,irudyak/kryo,kidaa/kryo,childRon/kryo,xfrendx/kryo,mikee805/kryo,kidaa/kryo,hepin1989/kryo,hierynomus/kryo,doubleyoung/kryo,doubleyoung/kryo