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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I was getting off-by-.01 errors off and on even after increasing granularity to 1e-3 and rounding to 1e-2.
Perhaps you should allow values on either side of a local minimum.
Either that, or specify exactly what should happen when approaching a minimum. That's a can of worms that's not worth it, I think.