diff --git a/Examples/UIExplorer/PanResponderExample.js b/Examples/UIExplorer/PanResponderExample.js
index b41b56f3e..c2e6a667c 100644
--- a/Examples/UIExplorer/PanResponderExample.js
+++ b/Examples/UIExplorer/PanResponderExample.js
@@ -52,8 +52,10 @@ var PanResponderExample = React.createClass({
     this._previousLeft = 20;
     this._previousTop = 84;
     this._circleStyles = {
-      left: this._previousLeft,
-      top: this._previousTop,
+      style: {
+        left: this._previousLeft,
+        top: this._previousTop
+      }
     };
   },
 
@@ -78,13 +80,17 @@ var PanResponderExample = React.createClass({
 
   _highlight: function() {
     this.circle && this.circle.setNativeProps({
-      backgroundColor: processColor(CIRCLE_HIGHLIGHT_COLOR)
+      style: {
+        backgroundColor: processColor(CIRCLE_HIGHLIGHT_COLOR)
+      }
     });
   },
 
   _unHighlight: function() {
     this.circle && this.circle.setNativeProps({
-      backgroundColor: processColor(CIRCLE_COLOR)
+      style: {
+        backgroundColor: processColor(CIRCLE_COLOR)
+      }
     });
   },
 
@@ -106,8 +112,8 @@ var PanResponderExample = React.createClass({
     this._highlight();
   },
   _handlePanResponderMove: function(e: Object, gestureState: Object) {
-    this._circleStyles.left = this._previousLeft + gestureState.dx;
-    this._circleStyles.top = this._previousTop + gestureState.dy;
+    this._circleStyles.style.left = this._previousLeft + gestureState.dx;
+    this._circleStyles.style.top = this._previousTop + gestureState.dy;
     this._updatePosition();
   },
   _handlePanResponderEnd: function(e: Object, gestureState: Object) {
diff --git a/Libraries/Components/Navigator/NavigatorBreadcrumbNavigationBarStyles.android.js b/Libraries/Components/Navigator/NavigatorBreadcrumbNavigationBarStyles.android.js
index 359e63c32..3ae86f0e7 100644
--- a/Libraries/Components/Navigator/NavigatorBreadcrumbNavigationBarStyles.android.js
+++ b/Libraries/Components/Navigator/NavigatorBreadcrumbNavigationBarStyles.android.js
@@ -125,18 +125,14 @@ RIGHT[0].Title = merge(FIRST_TITLE_BASE, {opacity: 0});
 var buildIndexSceneInterpolator = function(startStyles, endStyles) {
   return {
     Crumb: buildStyleInterpolator({
-      translateX: {
+      left: {
         type: 'linear',
-        from: 0,
-        to: endStyles.Crumb.left - startStyles.Crumb.left,
+        from: startStyles.Crumb.left,
+        to: endStyles.Crumb.left,
         min: 0,
         max: 1,
         extrapolate: true,
       },
-      left: {
-        value: startStyles.Crumb.left,
-        type: 'constant'
-      },
     }),
     Icon: buildStyleInterpolator({
       opacity: {
@@ -164,18 +160,14 @@ var buildIndexSceneInterpolator = function(startStyles, endStyles) {
         min: 0,
         max: 1,
       },
-      translateX: {
+      left: {
         type: 'linear',
-        from: 0,
-        to: endStyles.Title.left - startStyles.Title.left,
+        from: startStyles.Title.left,
+        to: endStyles.Title.left,
         min: 0,
         max: 1,
         extrapolate: true,
       },
-      left: {
-        value: startStyles.Title.left,
-        type: 'constant'
-      },
     }),
     RightItem: buildStyleInterpolator({
       opacity: {
diff --git a/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js b/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js
index fcd695abd..5a1015758 100644
--- a/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js
+++ b/Libraries/JavaScriptAppEngine/Initialization/InitializeJavaScriptAppEngine.js
@@ -44,6 +44,31 @@ function handleError(e, isFatal) {
   }
 }
 
+/**
+ * Assigns a new global property, replacing the existing one if there is one.
+ * 
+ * Existing properties are preserved as `originalPropertyName`. Both properties
+ * will maintain the same enumerability & configurability.
+ * 
+ * This allows you to undo the more aggressive polyfills, should you need to.
+ * For example, if you want to route network requests through DevTools (to trace
+ * them):
+ *
+ *     GLOBAL.XMLHTTPRequest = GLOBAL.originalXMLHTTPRequest;
+ * 
+ * For more info on that particular case, see:
+ * https://github.com/facebook/react-native/issues/934
+ */
+function polyfillGlobal(name, newValue, scope=GLOBAL) {
+  var descriptor = Object.getOwnPropertyDescriptor(scope, name);
+
+  if (scope[name] !== undefined) {
+    var backupName = `original${name[0].toUpperCase()}${name.substr(1)}`;
+    Object.defineProperty(scope, backupName, {...descriptor, value: scope[name]});
+  }
+  Object.defineProperty(scope, name, {...descriptor, value: newValue});
+}
+
 function setUpRedBoxErrorHandler() {
   var ErrorUtils = require('ErrorUtils');
   ErrorUtils.setGlobalHandler(handleError);
@@ -111,23 +136,23 @@ function setUpPromise() {
 function setUpXHR() {
   // The native XMLHttpRequest in Chrome dev tools is CORS aware and won't
   // let you fetch anything from the internet
-  GLOBAL.XMLHttpRequest = require('XMLHttpRequest');
-  GLOBAL.FormData = require('FormData');
+  polyfillGlobal('XMLHttpRequest', require('XMLHttpRequest'));
+  polyfillGlobal('FormData', require('FormData'));
 
   var fetchPolyfill = require('fetch');
-  GLOBAL.fetch = fetchPolyfill.fetch;
-  GLOBAL.Headers = fetchPolyfill.Headers;
-  GLOBAL.Request = fetchPolyfill.Request;
-  GLOBAL.Response = fetchPolyfill.Response;
+  polyfillGlobal('fetch', fetchPolyfill.fetch);
+  polyfillGlobal('Headers', fetchPolyfill.Headers);
+  polyfillGlobal('Request', fetchPolyfill.Request);
+  polyfillGlobal('Response', fetchPolyfill.Response);
 }
 
 function setUpGeolocation() {
   GLOBAL.navigator = GLOBAL.navigator || {};
-  GLOBAL.navigator.geolocation = require('Geolocation');
+  polyfillGlobal('geolocation', require('Geolocation'), GLOBAL.navigator);
 }
 
 function setUpWebSockets() {
-  GLOBAL.WebSocket = require('WebSocket');
+  polyfillGlobal('WebSocket', require('WebSocket'));
 }
 
 function setUpProfile() {
diff --git a/React.podspec b/React.podspec
index 4b762c858..523020ae9 100644
--- a/React.podspec
+++ b/React.podspec
@@ -24,7 +24,6 @@ Pod::Spec.new do |s|
   s.platform            = :ios, "7.0"
   s.prepare_command     = 'npm install --production'
   s.preserve_paths      = "cli.js", "Libraries/**/*.js", "lint", "linter.js", "node_modules", "package.json", "packager", "PATENTS", "react-native-cli"
-  s.header_mappings_dir = "."
 
   s.subspec 'Core' do |ss|
     ss.source_files     = "React/**/*.{c,h,m}"
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java
index 21540b59c..a841e2c9a 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/text/ReactTextShadowNode.java
@@ -73,7 +73,13 @@ public class ReactTextShadowNode extends ReactShadowNode {
       this.what = what;
     }
     public void execute(SpannableStringBuilder sb) {
-      sb.setSpan(what, start, end, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
+      // All spans will automatically extend to the right of the text, but not the left - except
+      // for spans that start at the beginning of the text.
+      int spanFlags = Spannable.SPAN_EXCLUSIVE_INCLUSIVE;
+      if (start == 0) {
+        spanFlags = Spannable.SPAN_INCLUSIVE_INCLUSIVE;
+      }
+      sb.setSpan(what, start, end, spanFlags);
     }
   }
 
diff --git a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
index 8a4833225..713209423 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/views/textinput/ReactTextInputManager.java
@@ -56,6 +56,8 @@ public class ReactTextInputManager extends
   public static final String PROP_TEXT_INPUT_TEXT = "text";
   @UIProp(UIProp.Type.NUMBER)
   public static final String PROP_TEXT_INPUT_MOST_RECENT_EVENT_COUNT = "mostRecentEventCount";
+  @UIProp(UIProp.Type.COLOR)
+  public static final String PROP_TEXT_INPUT_COLOR = ViewProps.COLOR;
 
   private static final String KEYBOARD_TYPE_EMAIL_ADDRESS = "email-address";
   private static final String KEYBOARD_TYPE_NUMERIC = "numeric";
@@ -157,16 +159,6 @@ public class ReactTextInputManager extends
         (int) Math.ceil(PixelUtil.toPixelFromSP(fontSize)));
   }
 
-  // Prevents flickering color while waiting for JS update.
-  @ReactProp(name = ViewProps.COLOR, customType = "Color")
-  public void setColor(ReactEditText view, @Nullable Integer color) {
-    if (color == null) {
-      view.setTextColor(DefaultStyleValuesUtil.getDefaultTextColor(view.getContext()));
-    } else {
-      view.setTextColor(color);
-    }
-  }
-
   @ReactProp(name = "placeholder")
   public void setPlaceholder(ReactEditText view, @Nullable String placeholder) {
     view.setHint(placeholder);
diff --git a/package.json b/package.json
index 5e6118d3f..2f3870188 100644
--- a/package.json
+++ b/package.json
@@ -7,6 +7,9 @@
     "type": "git",
     "url": "git@github.com:facebook/react-native.git"
   },
+  "engines": {
+    "node": ">=4"
+  },
   "jest": {
     "scriptPreprocessor": "jestSupport/preprocessor.js",
     "setupEnvScriptFile": "jestSupport/env.js",
diff --git a/packager/package.json b/packager/package.json
index f9927a87c..61f733d64 100644
--- a/packager/package.json
+++ b/packager/package.json
@@ -6,6 +6,9 @@
     "type": "git",
     "url": "git@github.com:facebook/react-native.git"
   },
+  "engines": {
+    "node": ">=4"
+  },
   "jest": {
     "setupEnvScriptFile": "jestSupport/env.js",
     "testPathIgnorePatterns": [
diff --git a/website/server/extractDocs.js b/website/server/extractDocs.js
index 7ce11d5f2..800718273 100644
--- a/website/server/extractDocs.js
+++ b/website/server/extractDocs.js
@@ -225,6 +225,7 @@ var apis = [
   '../Libraries/Storage/AsyncStorage.ios.js',
   '../Libraries/Utilities/BackAndroid.android.js',
   '../Libraries/CameraRoll/CameraRoll.js',
+  '../Libraries/Utilities/Dimensions.js',
   '../Libraries/Interaction/InteractionManager.js',
   '../Libraries/LayoutAnimation/LayoutAnimation.js',
   '../Libraries/LinkingIOS/LinkingIOS.js',