Slicemachine has no support for adding min/max values to NumberFields.
It can still be added manually in the json files, and will work correctly in the page builder etc.
I could'nt find any mention of these options in the docs Number - Documentation - Prismic, therefor im wondering if Prismic is planning on continuing the support for min/max, or if it is a deprecated feature that might be removed entirely in the future.
Personally i find the options incredibly useful, and would rather see more support for it.
Im using slicemachine v2.13, apologies if it has already been added in newer versions, but couldnt see any mention of it in any changelogs