Sled with Types instead of Bytes

This crate builds on top of ['sled'] and it's api is identical, except that it uses types in all places where sled would use bytes or it's IVec type.

Example

rust let db: sled::Db = sled::open("db")?; let animals = typed_sled::Tree<String, Animal>::init(&db, "animals") tree.insert("Larry", Animal::Dog)?;

Not tested throughoutly, in particular the Subscriber api might not be implemented correctly.