Version 4.0

Changelog for this release:

4.0.0

• API CHANGE: Some functions have been condensed, functions get_errstring, get_REFPROPname, etc. have been rolled into get_global_param_string.
• MAJOR: Code now is on github (https://github.com/ibell/coolprop)
• MAJOR: Internally all units are SI, functions should do the necessary conversions using conversion_factor() and get/set_standard_unit_system()
• MAJOR: Brines and incompressible liquids are added to CoolPropStateClass
• MAJOR: Preparing to phase out of DerivTerms function, Props now handles derivatives as well.
• Wrappers added for Java, Javascript, MathCAD, MathCAD Prime
• Improved wrapper for Labview (Thanks to the Sergei and guys at UGent)
• Improved plotting in Python (Thanks Logan)
• Improved Modelica wrapper and added incompressible fluids with p,T and p,h as state variables
• Added viscosity for n-Hexane
• Added R1233zd(E)
• Added more incompressible liquids: Therminol D12, Therminol VP-1, Therminol 72, Therminol 66, Dowtherm J, Dowtherm Q, Texatherm 22,
  Nitrate Salt Blend, Syltherm XLT, Dynalene HC-10, Dynalene HC-20, Dynalene HC-30, Dynalene HC-40, Dynalene HC-50
• Added slurry ice as incompressible solution of either water-ethanol, water-NaCl or water-propylene glycol with solid content as input
• Added corrosion inhibitor ZitrecAC, anti-freezing agent Pekasol2000
• Added Lithium-Bromide/water as incompressible solution (Thanks to Jaroslav Patek)