Changes between 4.9.3 and 4.10.0.RC1

This is a pre-release for 4.10.0, a maintenance release with a new feature and 2 bug fixes. All users of the 4.x.x and 3.6.x series are encouraged to test this version.

Add option to make RpcClient fail early if there are no bindings

GitHub issue: #417

RpcServer doesn't stop when its thread is interrupted

GitHub issue: #428

Make properties private in JSON RPC classes

GitHub issue: #417