Pluggable randomness source for dice rolls.
The default implementation (DicEx.RNG.Default) wraps :rand so the whole
tree can be seeded for reproducible sequences. DicEx.RNG.Deterministic is a
list-backed stub meant exclusively for tests — it pops pre-recorded outcomes
in order, making modifier logic fully predictable.
Summary
Callbacks
Returns a pseudo-random integer in the inclusive range 1..sides.
Callbacks
@callback roll(sides :: pos_integer()) :: pos_integer()
Returns a pseudo-random integer in the inclusive range 1..sides.