Fix for FCV problem

This update prevents a solution where the computed loss coefficient for a FCV at its flow setting would be less than the user supplied fully opened coefficient.

ReleaseNotes2_3.md

@@ -22,6 +22,8 @@ This document describes the changes and updates that have been made in version 2
    - changing the absolute tolerance used to compare the closeness of test results to benchmark values from 0 to 0.0001
    - dropping the "correct decimal digits" test 
    - dropping the check for identical status report content since it prevents accepting code changes that produce more accurate solutions in fewer iterations.
+ - A possible loss of network connectivity when evaluating a Pressure Sustaining Valve was prevented.
+ - Having the implied loss coefficient for an active Flow Control Valve be less than its fully opened value was prevented.