Avocado, the strongly-typed MongoDB driver

Usage

• cargo doc --no-deps --open
• Check out the examples/ folder
• More docs are coming!

TODO:

• Fix integer overflow TODO in bsn.rs
• Write documentation in lib.rs doc comments
• Write integration tests that exercise the library using an actual, running MongoDB database
• Default Doc::Id to ObjectId, Query::Output to T, and Distinct::Output to T as well, once #29661 is stabilized
• Auto-derive Doc trait; respect Serde renaming when obtaining type name!