Use a non-fused iterator for quickchecks
Use a non-fused iterator for quickchecks

Use an iterator that tries to trip up the adaptors. After yielding None
once at the end, it yields Some(0) again.

stepancheg/rust-itertools,imp/rust-itertools,Wilfred/rust-itertools,rust-itertools/itertools,tempbottle/rust-itertools,flo-l/rust-itertools,DanielKeep/rust-itertools