Handler doExecution return type too strict

According to Rast Lol on the JSON-RPC mailing list:

as per spec, it can be anything, including bool. also i don't know about PHP but js/json number type includes floating point numbers, not only integers. so if PHP makes a difference between int and, say, float/double, it should be there too

Automatically closed - issue fixed for 2 weeks with no activity.