[cantarell-fonts/ufo-conversion] Add commented-out instance debugging aid

[Nikolaus Waxweiler <nwaxweiler src gnome org>]

commit 2d3c9fad1d8ff21c7f2882a059fba152f3d5b1eb
Author: Nikolaus Waxweiler <madigens gmail com>
Date:   Sun Mar 31 16:00:58 2019 +0100

    Add commented-out instance debugging aid
    
    [skip ci]

 scripts/make-static-fonts.py | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/scripts/make-static-fonts.py b/scripts/make-static-fonts.py
index a35fd113..3645e62d 100644
--- a/scripts/make-static-fonts.py
+++ b/scripts/make-static-fonts.py
@@ -21,6 +21,9 @@ def generate_and_write_autohinted_instance(
     instance = instantiator.generate_instance(instance_descriptor)
     file_stem = f"{instance.info.familyName}-{instance.info.styleName}".replace(" ", "")
 
+    # 3.5. Optionally write instance UFO to disk, for debugging.
+    # instance.save(output_dir / f"{file_stem}.ufo", overwrite=True)
+
     # 4. Compile and write instance OTF to disk.
     instance_font = ufo2ft.compileOTF(instance, removeOverlaps=True, inplace=True)
     output_path = output_dir / f"{file_stem}.otf"