Characters don't work on Windows

It appears that the unicode characters are not generated or recognized correctly on Windows.

I've opened a PR to add a GitHub action to build on Windows, Linux and Mac; the Windows build always fails, though, because the tables look like this:

? compressed ? uncompressed
?????????????????????????????????????????????????????????????????
APK ? old ? new ? diff ? old ? new ? diff
???????????????????????????????????????????????????????????????????????????
dex ? 664.8 KiB ? 664.8 KiB ? -25 B ? 1.5 MiB ? 1.5 MiB ? -112 B
arsc ? 201.7 KiB ? 201.7 KiB ? 0 B ? 201.6 KiB ? 201.6 KiB ? 0 B
manifest ? 1.4 KiB ? 1.4 KiB ? 0 B ? 4.2 KiB ? 4.2 KiB ? 0 B
res ? 418.2 KiB ? 418.2 KiB ? -14 B ? 488.3 KiB ? 488.3 KiB ? 0 B
asset ? 0 B ? 0 B ? 0 B ? 0 B ? 0 B ? 0 B
other ? 37.1 KiB ? 37.1 KiB ? 0 B ? 36.3 KiB ? 36.3 KiB ? 0 B
???????????????????????????????????????????????????????????????????????????

See build results [here](https://github.com/garfieldnate/picnic/runs/2332380431?check_suite_focus=true).

No source file or test is named in the issue. Start by reproducing the Windows build from the linked GitHub Actions results and compare its table output with Linux and macOS; done means Unicode table characters are generated and recognized correctly and the Windows build passes.

Written by the indexing model from the issue text.