Upgrade to sbt 0.13.17

adriaanm · web-flow · commit f892d9dde90a · 2018-02-13T11:08:46.000+01:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.13
+sbt.version=0.13.17
