[0.13.0.x] Add notes about changes in mining (#2628)
[0.13.0.x] Add notes about changes in mining (#2628)

* Add `Mining` section to `Notable changes`, mention P2SH and `script` in `getblocktemplate`

* Also mention `coinbase_payload`

dashpay/dash,thelazier/dash,ionomy/ion,nmarley/dash,nmarley/dash,ionomy/ion,biblepay/biblepay,biblepay/biblepay,ionomy/ion,nmarley/dash,ionomy/ion,UdjinM6/dash,nmarley/dash,UdjinM6/dash,biblepay/biblepay,thelazier/dash,thelazier/dash,UdjinM6/dash,dashpay/dash,nmarley/dash,nmarley/dash,dashpay/dash,biblepay/biblepay,dashpay/dash,UdjinM6/dash,biblepay/biblepay,ionomy/ion,biblepay/biblepay,UdjinM6/dash,nmarley/dash,thelazier/dash,biblepay/biblepay,ionomy/ion,biblepay/biblepay,dashpay/dash,thelazier/dash