Bumping up the sbt version (#4)

vlputyan · grobie · commit 97ddf96fb692 · 2020-01-28T20:50:24.000+01:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.5
+sbt.version=0.13.6
