Breaking changes into 2 upgrades for easier review process.

Click through to the PRs for descriptions.

ArtistV3 - gas/ux optimizations

1. New setter functions - merged **https://github.com/soundxyz/protocol-public/pull/40**
2. New view function - ready for review https://github.com/soundxyz/protocol-public/pull/43
3. Send ETH directly to the edition’s owner(s) during the purchase transaction - **ready for review https://github.com/soundxyz/protocol-public/pull/39**
4. Combine edition id and token id using bit packing - ready for review https://github.com/soundxyz/protocol-public/pull/41

Artist V4

1. Limit botters and flippers - PR ready by 2/28
2. Enable open editions