Add version check code; add Release Notes menu item

Source/English.lproj/MainMenu.xib

Index: Source/English.lproj/MainMenu.xib 
=================================================================== 
--- Source/English.lproj/MainMenu.xib	(revision 21) 
+++ Source/English.lproj/MainMenu.xib	(working copy) 
@@ -8,7 +8,7 @@ 
	<string key="IBDocument.HIToolboxVersion">353.00</string> 
	<object class="NSMutableArray" key="IBDocument.EditedObjectIDs"> 
	<bool key="EncodedWithXMLCoder">YES</bool> 
-	<integer value="111"/> 
+	<integer value="106"/> 
	</object> 
	<object class="NSArray" key="IBDocument.PluginDependencies"> 
	<bool key="EncodedWithXMLCoder">YES</bool> 
@@ -510,6 +510,24 @@ 
	<reference key="NSOnImage" ref="807714090"/> 
	<reference key="NSMixedImage" ref="164488794"/> 
	</object> 
+	<object class="NSMenuItem" id="663046820"> 
+	<reference key="NSMenu" ref="865734583"/> 
+	<string key="NSTitle">Release Notes</string> 
+	<string key="NSKeyEquiv"/> 
+	<int key="NSMnemonicLoc">2147483647</int> 
+	<reference key="NSOnImage" ref="807714090"/> 
+	<reference key="NSMixedImage" ref="164488794"/> 
+	</object> 
+	<object class="NSMenuItem" id="1028466610"> 
+	<reference key="NSMenu" ref="865734583"/> 
+	<bool key="NSIsDisabled">YES</bool> 
+	<bool key="NSIsSeparator">YES</bool> 
+	<string key="NSTitle"/> 
+	<string key="NSKeyEquiv"/> 
+	<int key="NSMnemonicLoc">2147483647</int> 
+	<reference key="NSOnImage" ref="807714090"/> 
+	<reference key="NSMixedImage" ref="164488794"/> 
+	</object> 
	<object class="NSMenuItem" id="968880479"> 
	<reference key="NSMenu" ref="865734583"/> 
	<string key="NSTitle">Enable Network Logging to Desktop</string> 
@@ -819,6 +837,14 @@ 
	</object> 
	<int key="connectionID">262</int> 
	</object> 
+	<object class="IBConnectionRecord"> 
+	<object class="IBActionConnection" key="connection"> 
+	<string key="label">showReleaseNotes:</string> 
+	<reference key="source" ref="627321379"/> 
+	<reference key="destination" ref="663046820"/> 
+	</object> 
+	<int key="connectionID">265</int> 
+	</object> 
	</object> 
	<object class="IBMutableOrderedSet" key="objectRecords"> 
	<object class="NSArray" key="orderedObjects"> 
@@ -1058,6 +1084,8 @@ 
	<reference ref="968880479"/> 
	<reference ref="1016207958"/> 
	<reference ref="346057962"/> 
+	<reference ref="1028466610"/> 
+	<reference ref="663046820"/> 
	</object> 
	<reference key="parent" ref="817604557"/> 
	</object> 
@@ -1221,6 +1249,16 @@ 
	<reference key="object" ref="287248884"/> 
	<reference key="parent" ref="847096813"/> 
	</object> 
+	<object class="IBObjectRecord"> 
+	<int key="objectID">263</int> 
+	<reference key="object" ref="663046820"/> 
+	<reference key="parent" ref="865734583"/> 
+	</object> 
+	<object class="IBObjectRecord"> 
+	<int key="objectID">264</int> 
+	<reference key="object" ref="1028466610"/> 
+	<reference key="parent" ref="865734583"/> 
+	</object> 
	</object> 
	</object> 
	<object class="NSMutableDictionary" key="flattenedProperties"> 
@@ -1319,6 +1357,9 @@ 
	<string>258.ImportedFromIB2</string> 
	<string>259.IBPluginDependency</string> 
	<string>259.ImportedFromIB2</string> 
+	<string>263.IBPluginDependency</string> 
+	<string>263.ImportedFromIB2</string> 
+	<string>264.IBPluginDependency</string> 
	<string>29.IBEditorWindowLastContentRect</string> 
	<string>29.IBPluginDependency</string> 
	<string>29.ImportedFromIB2</string> 
@@ -1352,7 +1393,7 @@ 
	<boolean value="YES" id="5"/> 
	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
	<reference ref="5"/> 
-	<string>{{297, 1042}, {319, 83}}</string> 
+	<string>{{297, 1012}, {319, 113}}</string> 
	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
	<reference ref="5"/> 
	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
@@ -1438,6 +1479,9 @@ 
	<reference ref="5"/> 
	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
	<reference ref="5"/> 
+	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
+	<reference ref="5"/> 
+	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
	<string>{{0, 1125}, {358, 20}}</string> 
	<string>com.apple.InterfaceBuilder.CocoaPlugin</string> 
	<reference ref="5"/> 
@@ -1484,7 +1528,7 @@ 
	</object> 
	</object> 
	<nil key="sourceID"/> 
-	<int key="maxID">262</int> 
+	<int key="maxID">265</int> 
	</object> 
	<object class="IBClassDescriber" key="IBDocument.Classes"> 
	<object class="NSMutableArray" key="referencedPartialClassDescriptions"> 
@@ -1501,6 +1545,7 @@ 
	<string>loggingCheckboxClicked:</string> 
	<string>reloadMailboxes:</string> 
	<string>showHelp:</string> 
+	<string>showReleaseNotes:</string> 
	<string>simulateUploadsClicked:</string> 
	</object> 
	<object class="NSMutableArray" key="dict.values"> 
@@ -1511,6 +1556,7 @@ 
	<string>id</string> 
	<string>id</string> 
	<string>id</string> 
+	<string>id</string> 
	</object> 
	</object> 
	<object class="NSMutableDictionary" key="outlets">