Update the 2019 RI test models based on the 2019.1.0RC branch function
rename VRFSys:DefTime to VRFSys:DefTimeFrac
Add FSEC VRF performance curves to library
Update VRF screen and Enums
Merge CBECC-Com 2019 Alpha branch r5350 into this VRF testing branch
Model update for CBECC-Com 2016.3.0 SP1 RulesetImplementation testing
Update model to match updated AFUE min code
Update RulesetImplementation2016Test models to reflect new features