v8.1.0

It is now possible to convert from a wallet to an address using the mxpy wallet convert command.
The issue and instructions can be found here.

What's Changed

• Fix no wasm opt argument by @popenta in #329
• Convert from wallet to bech32 address or pubkey by @popenta in #328
• Bump version to v8.1.0 by @popenta in #330

Full Changelog: v8.0.0...v8.1.0