0.21.2

• Fix for false positive in FailwithBadUsage #539 [@janus]
• FavourConsistentThis: fix some false positives and add unit tests for them [@janus]
• NoPartialFunctions: detect instance members Option.Value, Map.Item, List.Head & List.Item [@su8898]
• Cover more scenarios in FailwithBadUsage [@janus]