Release 2.2.0

• Merge pull request #38 from leftshiftone/feature/energie-97 (9727861)
• Merge branch 'master' into feature/energie-97 (eaff986)
• [ENERGIE-97] Add HorizontalStackedBar, add icon to doughnut, change doughnut to allow the same label for different types (a123728)
• [GAIA-1472] (extend choice test) (#37) (ef8f948)
• Feature/gaia 1471 (#36) (64fac6b)
• [INFRA] out of memory exception during tests (#32) (13b890b)
• [LO-242] problem with multiple choice inputs, added tests (#33) (0b56b63)
• introduced selectionItem and selectable as subelements of selection +… (#34) (4bfc75a)
• Merge branch 'master' into feature/energie-97 (811c903)
• use curl docker image for webhooks (2ff6aa5)
• Feature/new tests (#31) (18e8fe1)
• fixed singleChoice selection (#29) (6a2d7b3)
• added npm badge (d84e526)
• use lock file for ci cache (019570d)
• store test results for ci (faa996e)
• collect test results in for ci (5a04ba1)
• use a single worker for jest (44448b5)
• fix onclick for specs with undefined position (#28) (7bac73e)
• Add horizontalStackedBar, adjust donut display & stackedbar (985958d)
• fix onclick for specs with undefined position (0abdfe4)