v0.6.4

https://www.npmjs.com/package/@nation3/nationcred-contracts/v/0.6.4

What's Changed

• chore(deps-dev): bump typechain from 8.1.1 to 8.3.2 by @dependabot in #78
• Return zero when locked amount lower than threshold by @aahna-ashina in #80
• chore(deps): bump actions/setup-node from 3 to 4 by @dependabot in #79
• Add smart contract for storing skill level ratings per citizen role by @aahna-ashina in #83
• Operator skill levels by @aahna-ashina in #86
• Marketeer skill levels (#82) by @aahna-ashina in #87
• Ethereum Attestation Service (#85) by @aahna-ashina in #88

Full Changelog: v0.6.1...v0.6.4