fix bash bug when using awk to convert lf to crlf
fix: \" was being replaced with /" ,messing up tests pretty print
bugfix -  cd out of website path before rebuilding on loop
fix bugs in date code setting. fix bug with crlf conversion
Add regression tests for comparison with NaN
Fix NaN comparison bug
Prevent crash in OFF/AMF export caused by non-manifold models (fixes #748).
Merge pull request #750 from openscad/non-manifold-export-crash

Prevent crash in OFF/AMF export caused by non-manifold models (fixes #748).
Merge pull request #747 from OskarLinde/nan_fix

NaN comparisons were inconsistent
Merge branch 'unstable' into contextfixme
minor cleanup of stack handling