PrunedRelaxedClockModel is broken after meanRate is changed to Function

[walterxie]

@rbouckaert
PrunedRelaxedClockModel has the code to assume UCRelaxedClockModel meanRate is RealParameter. I add the code to cast it into RealParameter after meanRate is changed to Function .

Please review my bug fix and close this issue if you are happy with the solution.

[rbouckaert]

Thanks for fixing! I start to think this should be reverted and made available for v2.7, since it breaks a few other clock models as well and causes an API change.

[rbouckaert]

I reverted the RealParameter => Function change, but plan to roll it back for v2.7. Perhaps this change can be reverted as well and parked for now. Sorry for the hassle.

[walterxie]

You do not need to revert the code for this fix. It works when meanRate is either RealParameter or Function .

[rbouckaert]

Good point!