add onOwnerChanged as default method + comment
add onOwnerChanged as default method + comment

LivelyKernel/LivelyKernel,NikolaySuslov/LivelyKernel,NikolaySuslov/LivelyKernel,NikolaySuslov/LivelyKernel,pascience/LivelyKernel,pascience/LivelyKernel,LivelyKernel/LivelyKernel,pascience/LivelyKernel,LivelyKernel/LivelyKernel