Add missing break for push button case and tidy up some formatting.
Implement credit reporting directly from CUL device rather than manually calculating it and utilise it in the Max! CUL binding.
Comment tidy/ make more useful
Implement a credit monitoring binding to enable the monitoring of the traffic situation.
Merge pull request #1492 from cyclingengineer/maxcul-binding-updates

Max!CUL Binding - Handle TX credit via hardware