v0.20.0-rc

What's Changed

• V0.18.2 - Polytone CI tests by @hard-nett in #240
• patch cosmos-sdk for v018 by @hard-nett in #242
• Slashed delegators by @hard-nett in #243
• Hard nett/v020 rc by @hard-nett in #245
• V019 by @hard-nett in #246
• Revert "V019" by @hard-nett in #247
• V020 by @hard-nett in #249

Full Changelog: v0.19.0...v0.20.0-rc