Relax lens upper dependency bound.

leftaroundabout · leftaroundabout · commit 378f546256f6 · 2016-05-20T17:21:15.000+02:00
diff --git a/dynamic-plot.cabal b/dynamic-plot.cabal
@@ -61,7 +61,7 @@ Library
                      , glib
                      , colour >= 2 && < 3
                      , manifolds >= 0.2.2 && < 0.2.3
-                     , lens < 4.12.4
+                     , lens < 4.15
   Other-Extensions:  FlexibleInstances
                      , TypeFamilies
                      , FlexibleContexts
