[dbaupp]

Bounds checking is only required for random access indexing into an array. Sequential access is very efficient (and perfectly safe) using iterators. Furthermore, if you're sure an access is always valid, you can use call the unchecked indexing method. (This requires an `unsafe` block to call: i.e. risk-of-unsafety is opt-in, but it is still easily possible on a case-by-case basis.)

Symbol mangling and exception handling can be disabled.

Split stacks are gone, but, at the moment, the prelude for checking stack bounds is still used to protect against stack overflow (I believe this can also be disabled).