Seed_type `random`

[jkomoros]

Ideally there should be a way to seed it ... but then not have every single call just return the seeded value.

Maybe a random and a seed-random, and only when seed-random is called is the random number generator for sub-seeds re randomized?

Environments get a random number generator. cloneWithSeed(newSeed) changes the seed. clone() uses the same generator as the top level.

• [x] random seed type
• [x] Add random.min
• [x] Add random.max
• [x] Add random.round = 'none', 'floor', 'ceiling', 'round'
• [x] Add random.choice
• [x] random-seed seed type (default to now())
• [ ] Add a shuffle seed type