update build and changelog

Author: mourner

CHANGELOG.md

@@ -9,6 +9,11 @@ An in-progress version being developed on the master branch.
 
  * Added optional `animate` argument to `Map` `invalidateSize` (by [@ajbeaven](https://github.com/ajbeaven)). [#857](https://github.com/CloudMade/Leaflet/pull/857)
 
+## 0.4.2 (August 1, 2012)
+
+ * Fixed a bug where layers control radio buttons would not work correctly in IE7 (by [@danzel](https://github.com/danzel)). [#862](https://github.com/CloudMade/Leaflet/pull/862)
+ * Fixed a bug where `FeatureGroup` `removeLayer` would unbind popups of removed layers even if the popups were not put by the group (affected [Leaflet.markercluster](https://github.com/danzel/Leaflet.markercluster) plugin) (by [@danzel](https://github.com/danzel)). [#861](https://github.com/CloudMade/Leaflet/pull/861)
+
 ## 0.4.1 (July 31, 2012)
 
  * Fixed a bug that caused marker shadows appear as opaque black in IE6-8. [#850](https://github.com/CloudMade/Leaflet/issues/850)

dist/leaflet-src.js

@@ -3516,7 +3516,11 @@ L.FeatureGroup = L.LayerGroup.extend({
 
 		L.LayerGroup.prototype.removeLayer.call(this, layer);
 
-		return this.invoke('unbindPopup');
+		if (this._popupContent) {
+			return this.invoke('unbindPopup');
+		} else {
+			return this;
+		}
 	},
 
 	bindPopup: function (content) {
@@ -6928,16 +6932,35 @@ L.Control.Layers = L.Control.extend({
 		this._separator.style.display = (overlaysPresent && baseLayersPresent ? '' : 'none');
 	},
 
-	_addItem: function (obj, onclick) {
-		var label = document.createElement('label');
+	// IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
+	_createRadioElement: function (name, checked) {
 
-		var input = document.createElement('input');
-		if (!obj.overlay) {
-			input.name = 'leaflet-base-layers';
+		var radioHtml = '<input type="radio" name="' + name + '"';
+		if (checked) {
+			radioHtml += ' checked="checked"';
 		}
-		input.type = obj.overlay ? 'checkbox' : 'radio';
+		radioHtml += '/>';
+
+		var radioFragment = document.createElement('div');
+		radioFragment.innerHTML = radioHtml;
+
+		return radioFragment.firstChild;
+	},
+
+	_addItem: function (obj) {
+		var label = document.createElement('label'),
+		    input,
+		    checked = this._map.hasLayer(obj.layer);
+
+		if (obj.overlay) {
+			input = document.createElement('input');
+			input.type = 'checkbox';
+			input.defaultChecked = checked;
+		} else {
+			input = this._createRadioElement('leaflet-base-layers', checked);
+		}
+
 		input.layerId = L.Util.stamp(obj.layer);
-		input.defaultChecked = this._map.hasLayer(obj.layer);
 
 		L.DomEvent.on(input, 'click', this._onInputClick, this);