Optional format and linting settings

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+# scalafmt sbt plugin config
+# refer to https://olafurpg.github.io/scalafmt/#Configuration for properties
+
+--style defaultWithAlign # For pretty alignment.
+--maxColumn 120          # For my wide 30" display.
+
+--reformatDocstrings true
+--scalaDocs
+
+--continuationIndentCallSite 4
+--continuationIndentDefnSite 4
+
+--rewriteTokens ⇒;=>,←;<-
+--danglingParentheses false
+--spaceAfterTripleEquals true
+--alignByArrowEnumeratorGenerator true
+--binPackParentConstructors true
+--allowNewlineBeforeColonInMassiveReturnTypes true
+--spacesInImportCurlyBraces false
+
+# --alignByOpenParenCallSite <value>
+# --alignByOpenParenDefnSite <value>