Fixed PolyMath to correct name clash with DEBUG macro - should use get/set_debug_level instead

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
More work on transport properties.  Hardcoded propane values for now. Also implemented tests for viscosity

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
HEOS can call transport properties

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
Load transport properties (default values for now)

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
Fixed incompressible include path

Signed-off-by: Ian bell <ian.h.bell@gmail.com>
Sphinx config links to dreamhosters doxygen output

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