It's very helpful having a sub-permille precision in a progress
indicator, percent-precision or at most a tenth of a percent should be
sufficient for any indicator.
But in particular the compute-retention progress has 10 steps, i.e. the progress
increases in 10%-intervals (10%, 20%, ...), it *cannot* have sub-decimal
progress-percentages, see 2d5b19b494/src/optimal_retention.rs (L365-L368). So there integer percents should be
enough, everything else is misleading.
The compute-weights progress is currently (as of beta-2) not showing up at all.
Maybe if the bug is fixed it can show sub-percent percentages, so for know I changed that
to 0.1% precision. But I think integer percentages should be fine here as well,
so upon request I can fix that.
Also see my comment on this problem in https://forums.ankiweb.net/t/anki-23-10-beta/34912/39.
2491b93ea6