Implement an option to sort map keys on serialization

bump version

Finish off docs

Custom serializer support (untested/undocumented)

Fix build

Add name to manual

Allow port to be omitted in calls to cbor-read and cbor-write

Start doing manual

Specify contracts for config mutators

More testing

Test vector and sequence encoding

Rename collection (and racket package) to `cbor`

Use list shorthand in decoder, update readme

Export adjustments

Start testing encoder, split some test data and share it between encode/decode tests

Support writing vectors and sequences

Make read-n-bytes performant (tm)

Implement bignums and enable the disabled tests

Explicitly throw on early EOF in decoder

Add a registry for tag deserialization