Updated docs
Merge branch 'master' of https://github.com/DanWBR/dwsim3
Added hydrate calculation method option to the phase envelope utility;
Enhancing/fixing hydrate models to correctly support hydrocarbons that don't form hydrates.
Changed hydrate models to display HC liquid phase composition only when in equilibrium with the other phases.
Update README.txt
Reworked welcome screen to add donation information.
Merge branch 'master' of https://github.com/DanWBR/dwsim3
Update CoolPropPropertyPackage.vb

Fixed enthalpy and entropy calculations.
Update PropertyPackage.vb

Fixed single compound flash calculations for CoolProp PP.
Update FormConfigPP.vb

Fixed not showing for non Peng-Robinson PPs.
Update HeatExchanger.vb
Update ExUNIQUACPropertyPackage.vb

Added override for DW_CalcEquilibrio_ISOL
Update LIQUAC2PropertyPackage.vb

Added override for DW_CalcEquilibrio_ISOL
Update LIQUAC2PropertyPackage.vb
Update ExUNIQUACPropertyPackage.vb
Re-factored Electrolyte Property Package code base.
Update FrmColdProperties.vb

Updates to calculation procedures.
Update ElectrolyteSVLE.vb

FIxing Electrolyte PH Flash algo.
Update PropertyPackage.vb
Update ElectrolyteSVLE.vb