Add test for reusing an Entity. This will lead to a crash.
Add test for reusing an Entity.
This will lead to a crash.

drewet/entityx,jarrettchisholm/entityx,alecthomas/entityx,alecthomas/entityx,alecthomas/entityx,asmodehn/entityx,asmodehn/entityx,Bablawn3d5/entityx,arvidsson/entityx,Bablawn3d5/entityx,asmodehn/entityx,Bablawn3d5/entityx,arvidsson/entityx,jarrettchisholm/entityx,jarrettchisholm/entityx,arvidsson/entityx,drewet/entityx,jaynus/entityx,jaynus/entityx,drewet/entityx,asmodehn/entityx,jaynus/entityx