Previously, you could not use `List<Vec<MyService>>` as a type, because
`List<T>` required `T: Iterator`. Instead, you'd have to write
`List<std::vec::IntoIter<MyService>>`, which gets really bad for
complex iterator types. This change instead makes `List<T>` require
`T: IntoIterator`, and then store `T::IntoIter`. This is a little weird
intuitively, but makes writing out the type for a `List` much more
pleasant.
This changes the Service request type to a generic instead of an associated
type. This is more appropriate as requests are inputs to the service.
This change enables a single implementation of `Service` to accept many
kinds of request types. This also enables requests to be references.
Fixes#99
A dual MIT / Apache 2.0 license does not make any sense. Since the
intent of the original license was to be dual under MIT or Apache 2.0,
restricting to ony MIT is OK.
Carl Lerche
Jake Shadle
David Barsky
Sean McArthur
Jon Gjengset