An indirection-collapsing container that generalizes from nested.

This crate provides a container FlatVec and two traits, IntoFlat and FromFlat. A FlatVec is parameterized on one type, and IntoFlat and FromFlat are both parameterized on two types. None of these type parameters need to be the same.

This permits collapsing indirections while also permitting minimal/zero-copy usage, as demonstrated in examples/domain_name.rs.

This interface also permits some interesting other applications, as in examples/gzip.rs.