Release 0.2.0

What's Changed

• Update README.md by @moodmosaic in #94
• Refactor test script in package.json by @BowTiedRadone in #95
• Select contracts implementing the correct trait from the Clarinet project for argument generation by @BowTiedRadone in #88
• Bump version to 0.2.0 by @moodmosaic in #100

Full Changelog: 0.1.3...0.2.0