Kolakoski sequence iterator

Information about the Kolakoski sequence can be found at the OEIS page for it: https://oeis.org/A000002

In test.rs, the first 100 number of the sequence are used for testing. These numbers come from https://oeis.org/A000002.

Warning! Attempting to get too many numbers from the iterator may cause a stack overflow. If the test fails for that reason, lower the number of items take to test like so:

// Too many
for (i, n) in Kolakoski::new().take(10_000_000)

// A better amount
for (i, n) in Kolakoski::new().take(20)

More that 100 will also fail, because the test only includes the first 100 number for comparison.

Features:

default

The default feature makes Kolakoski iterate over u8, this feature is no_std also.

num-traits

The num-traits feature makes Kolakoski iterate generically over any type that implements num::traits::Num. This includes a dependency of num v1.4, and makes the crate no longer no_std.