Merge pull request #23 from esamson/master

Upgrade to scala 2.13.1 and sbt 1.3.3

Author: jpsacha

build.sbt

@@ -6,7 +6,7 @@ version := "1.13.0"
 
 organization := "org.scalafx"
 
-scalaVersion := "2.13.0"
+scalaVersion := "2.13.1"
 
 libraryDependencies ++= Seq(
   "org.scalafx" %% "scalafx" % "12.0.2-R18",

project/build.properties

@@ -1,2 +1,2 @@
-sbt.version=1.3.0
+sbt.version=1.3.3