Release v0.1.0

[dr-orlovsky]

Tasks that has be completed before the release

• Adoption of new PSBT keys and processing
• Update of fungible assets schema Implement new set of RGB schemata for fungible assets #69
• Update of integration API to match the latest changes
• Update of invoice format

Tasks before release:

• Update lower timestamp bound:
  https://github.com/LNP-BP/rgb-node/blob/4e9e632c85ae808e81044b4147076879f9701ace/src/contracts/fungible/data/schema.rs#L95-L97