Use custom object formatters for any part of a diff, not just leaf nodes

src/core/requireCore.js

@@ -84,6 +84,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.DiffBuilder = jRequire.DiffBuilder(j$);
     j$.NullDiffBuilder = jRequire.NullDiffBuilder(j$);
     j$.ObjectPath = jRequire.ObjectPath(j$);
+    j$.MismatchTree = jRequire.MismatchTree(j$);
     j$.GlobalErrors = jRequire.GlobalErrors(j$);
 
     j$.Truthy = jRequire.Truthy(j$);