Tezos Reward Distributor: Oxford2

What's Changed

• First payments done since v11.0 by @jdsika in #699
• Update copyright, instructions and version numbers by @jdsika in #698
• Fix: Use Windows compatible signals by @nicolasochem in #695
• Feat: Make tzpro_api_key configuration optional by @nicolasochem in #694
• Fix: Single-shot mode always exiting in error by @nicolasochem in #679
• Fix: Logger recursion by @nicolasochem in #692
• Update: Docker image and Python version by @nicolasochem in #693
• Fix: Twitter plugin to api v2 by @ericlavoie in #691
• Feat: Record playback tests with API calls by @vkresch in #690
• Fix: update constants.py by @jdsika in direct commit
• Fix: Cleanup launch and requirements installation by @jdsika in #686
• Fix: enum comparisons and fix api key by @vkresch in #688
• Feat: Migrate tzstats to tzpro by @jdsika in #685
• Fix: tests_api_consistency by @denver-s in #683

Full Changelog: v11.1...v12.0