Semantics of CCBV.resize

[favonia]

I am confused by the current code.

1. Should this be true or false? Current, it returns true.

let bv = CCBV.create ~size:3 true in CCBV.resize bv 1; CCBV.get bv 2

2. Should this be exception-free? Current, it raises an exception.

let bv = CCBV.create ~size:1 true in CCBV.resize bv 0