Add max version due to abstract change

ChrisRackauckas · ChrisRackauckas · commit 525fb3e8eb6a · 2017-01-06T17:17:29.000-08:00
diff --git a/REQUIRE b/REQUIRE
@@ -1,5 +1,5 @@
 julia 0.5
 SymEngine 0.1.2
 DataStructures 0.4.6
-DiffEqBase 0.4.0
+DiffEqBase 0.4.0 0.5.0
 SimpleTraits 0.1.1
