This commit updates the benchmark and repeat counts for various example
files. These changes reflect potential performance improvements or
variations observed during testing.
- Use a `make-random` factory to create isolated random number
generators.
- Remove the global `prng` from the `Environment`.
- Ensure `make-random` can be called with or without a seed.
Implements the `create-ticker` function, which allows for the creation
of a ticker stream based on a provided condition closure. This function
is crucial for synchronizing pipeline execution based on specific events
or conditions.