Protocol Buffer Reader/Writer

This is a simple implementation of a Reader and a Writer for sending and receiving Protocol Buffers.

In this version, it works with Uint8Arrays and Longs (from https://deno.land/x/long@v1.0.0/mod.ts). Future versions may add BigInt support.

Restrictions and Limitations

• Wire Types 3 (SGROUP) and 4 (EGROUP) are not currently supported.
• proto2 is not explicitly supported.
• Testing does not yet cover 100% of use cases (pull requests are welcome!)