v0.12.0 [For TestNetOnly]

What's Changed

• switch to substrate:mangata-dev by @mateuszaaa in #200
• Feature/attach-snapshots-to-gh by @goncer in #196
• Feature/issuance vesting crowdloan by @iStrike7 in #193
• Feature/tokenomics impl by @iStrike7 in #188
• Feature/basic vesting impl by @iStrike7 in #190
• Feature/council as staking fallback by @iStrike7 in #195
• implement wrapper script for docker container by @mateuszaaa in #204
• fix address parsing by @mateuszaaa in #207

Full Changelog: v0.11.0...v0.12.0