Merge pull request #22 from LeeTibbert/PR_build_dirtyMoney_plugin_2020-04-17

build: Add dirty-money plugin for cleaning .ivy2 caches

Author: lolgab

project/plugins.sbt

@@ -1,4 +1,5 @@
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.0-M2")
+addSbtPlugin("com.eed3si9n"     % "sbt-dirty-money"  % "0.2.0")
 addSbtPlugin("com.jsuereth"     % "sbt-pgp"          % "2.0.0")
 addSbtPlugin("org.xerial.sbt"   % "sbt-sonatype"     % "3.8.1")
 addSbtPlugin("org.scalameta"    % "sbt-scalafmt"     % "2.3.4")