Misc optional Glyphs app compatibility formatting options

[justvanrossum]

• with single_line_tuples: don't output a space after a comma. This change is tied to single_line_tuples and is not backwards compatible.
• single_line_empty_objects: this is kindof the opposite of single_line_tuples, in that it causes empty objects ({} and []) to be formatted over two lines. Default true.
• binary_spaces: add/don't add grouping spaces for binary (hex) data (default true)

This fixes #36.

[justvanrossum]

Hm, that test failure: did I cause that? I'm not sure I understand the error.

[anthrotype]

single_line_empty_objects... Default false.

you meant, default true (as in by default we keep serializing empty objects on a single line, unless single_line_empty_objects=False)

Hm, that test failure: did I cause that? I'm not sure I understand the error.

this is the same as this: pypa/cibuildwheel#598 (comment)
The immediate fix is to do this:

fonttools/fonttools@8abe2ae

Another better way to fix (possibly in a follow up PR if ever) is to completely avoid using docker/qemu for linux aarch64 and use the new, faster, Github-hosted Linux arm64 runners like I did in fonttools

fonttools/fonttools@cdf5a6e

[anthrotype]

LGTM

[justvanrossum]

you meant, default true (as in by default we keep serializing empty objects on a single line, unless single_line_empty_objects=False)

Ah yes, sorry, fixed the description.

[justvanrossum]

Another better way to fix (possibly in a follow up PR if ever) is to completely avoid using docker/qemu for linux aarch64 and use the new, faster, Github-hosted Linmux arm64 runners like I did in fonttools

For now I applied your earlier workaround. The better change looks much nicer, though, I'll gladly PR that afterwards.