Insul release 9.020

INSUL Release 9.0.20, July 2019, is now available.
The update comprises tweaks and bug fixes for both Windows and Mac.
Changes include:
Improved Composite TL Calculator functionality in Mac version
Fixed bug in Double Floor (ISPL) calcs with no cavity infill
Minor printing improvements for Test Panel sizes
Improved Materials Editor closing routines
Revised update-checking routines to prevent hanging
Updated illustrations of cavity infill on file open
Bug fix for rain noise models for orthotropic panels