Texpad macOS 1.7.2

Maintenance release - tolerance of curly brackets in and out of math mode - fix for the license system - don’t show changed outside texpad alert for image - scroll gutters widened - autotypeset update fix - autoclose parens hidden for now - autosense fixes - suppressed # arguments in section titles (and the placeholder char) - fix to typeset chains using ps2pdf - a fix to shared locations in settings (fixes setting of TEXINPUT, BIBINPUTS, BSTINPUTS)