use 'this', not 'window', as global object; allow for Ox.break in Ox.loop

source/Ox/js/Core.js

@@ -22,7 +22,7 @@ Some conventions:
         k           key (of a key/value pair)
         key         key (of a key/value pair)
         max         maximum value
-        min         minumum value
+        min         minimum value
         num         number
         obj         object
         re          regexp
@@ -71,15 +71,17 @@ Some conventions:
 // todo: check http://ejohn.org/blog/ecmascript-5-strict-mode-json-and-more/
 // also see https://github.com/tlrobinson/narwhal/blob/master/lib/util.js
 
+(function(global) {
     /*@
     Ox <f> The <code>Ox</code> object
         See <code>Ox.wrap</code> for details.
         (value) -> <o> wrapped value
         value <*> Any value
     @*/
-window.Ox = function(val) {
+    global.Ox = function(val) {
         return Ox.wrap(val);
     };    
+})(this);
 
 /*@
 Ox.load <f> Loads a module
@@ -255,11 +257,18 @@ Ox.loop = function() {
         step = len == 4 ? arguments[2] : (start <= stop ? 1 : -1),
         fn = arguments[len - 1],
         i;
+    try {
         for (i = start; step > 0 ? i < stop : i > stop; i += step) {
             if (fn(i) === false) {
+                console.warn('Returning false in Ox.loop is deprecated.')
                 break;
             }
         }
+    } catch(e) {
+        if (e !== Ox.BreakError) {
+            throw e;
+        }
+    }
     return i;
 };
 
@@ -313,7 +322,6 @@ Ox.print <f> Prints its arguments to the console
     > Ox.print('foo').split(' ').pop()
     "foo"
 @*/
-
 Ox.print = function() {
     var args = Ox.toArray(arguments),
         date = new Date();
@@ -332,7 +340,6 @@ Ox.uid <f> Returns a unique id
     > Ox.uid() != Ox.uid()
     true
 @*/
-
 Ox.uid = (function() {
     var uid = 0;
     return function() {
@@ -354,7 +361,6 @@ Ox.wrap <f> Wraps a value so that one can directly call any Ox function on it
     > Ox.wrap("foobar").value()
     "foobar"
 @*/
-
 Ox.wrap = function(val, chained) {
     // somewhat inspired by underscore.js
     var wrapper = {