put upper bound on DiffBase version

jrevels · jrevels · commit 20c0424a7898 · 2017-05-19T10:34:16.000-04:00
diff --git a/REQUIRE b/REQUIRE
@@ -1,6 +1,6 @@
 julia 0.6-
 StaticArrays 0.5.0
-DiffBase 0.2.0
+DiffBase 0.2.0 0.3.0
 NaNMath 0.2.2
 SpecialFunctions 0.1.0
 RealInterface 0.0.2
