keysemaphore - Keyed Semaphores 
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Quick Start
To use keysemaphore in an existing SBT project with Scala 2.12, 2.13, or 3.0, add the following dependencies to your
build.sbt depending on your needs:
libraryDependencies ++= Seq(
"io.chrisdavenport" %% "keysemaphore" % "<version>"
)
