Update to sbt 0.13.0.

gkossakowski · gkossakowski · commit ebd7a216a3a4 · 2013-10-16T17:32:56.000+02:00
The build.properties file mentions that 0.13.0 breaks plugin
resolution but doesn't mention what plugins are broken. I tried upgrading
and everything works fine so I'm committing that change.
diff --git a/project/build.properties b/project/build.properties
@@ -1,3 +1 @@
-# 0.13.+ breaks plugin resolution
-sbt.version=0.13.0-RC5
-
+sbt.version=0.13.0
