0.13.2

• Use grafana-client-2.1.0, remove monkeypatch
• Tests: Improve fixture create_datasource to clean up afterwards
• Tests: Add fixture create_dashboard to create dashboards at runtime
• Tests: Disable caching in test mode
• Tests: Make test suite clean up its provisioned assets from Grafana
• Tests: Run Grafana on non-standard port 33333
• Tests: Add flag CLEANUP_RESOURCES to determine whether to clean up
  all resources provisioned to Grafana.
• Tests: Improve test quality, specifically for explore dashboards on
  Grafana 6 vs. Grafana >= 7
• Tests: Make test case for explore datasources use two data sources
• Tests: Mimic Grafana 7/8 on datasource references within dashboards, newer
  versions have objects (uid, type) instead of bare names
• Fix implementation flaw reported at #32. Thanks, @IgorOhrimenko and @carpenterbees!
• CI: Use most recent Grafana 7.5.15 and 8.4.4

Full Changelog: 0.13.1...0.13.2