Update to sbt 0.13.7 for auto-publish script.

adriaanm · adriaanm · commit dab6c6ad0f3e · 2014-12-04T13:29:06.000-08:00
Need better whitespace support, I think. https://travis-ci.org/scala/scala-parser-combinators/jobs/43029096
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.5
+sbt.version=0.13.7
