Moved interesting IPython notebooks to the doc/notebooks folder

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Resolved some issues with Bicubic interpolation

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Ancillary fitter is super fast now! Reimplemented genetic ancillary fitter based on the linear fitting methods of Span instead of ODRPack

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>
Merge branch 'master' of https://github.com/ibell/coolprop

Conflicts:
	CoolProp/gitrevision.h

Signed-off-by: Ian Bell <ian.h.bell@gmail.com>