- The calculation of well connection transmissibility CF and effective
permeability is calculated.
- The Connection objects are immutable; should never be updated.
- The properties of the Connection class are just plain properties, have
removed getter methods and the use of Value<double>.
Needed for restart output (especially, SCON), and also useful for
computing the connection transmissibility factor (WI) in some cases
if not supplied in COMPDAT.
