Update Sparkle to 1.20.0

Unfortunately, due to the nature of the issue a manual update to a new
version will be required.

Fixes: #600

macosx/Sparkle.framework/Versions/A/Resources/SUStatus.nib/classes.nib

@@ -1,56 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>IBClasses</key>
-	<array>
-		<dict>
-			<key>CLASS</key>
-			<string>SUWindowController</string>
-			<key>LANGUAGE</key>
-			<string>ObjC</string>
-			<key>SUPERCLASS</key>
-			<string>NSWindowController</string>
-		</dict>
-		<dict>
-			<key>CLASS</key>
-			<string>NSApplication</string>
-			<key>LANGUAGE</key>
-			<string>ObjC</string>
-			<key>SUPERCLASS</key>
-			<string>NSResponder</string>
-		</dict>
-		<dict>
-			<key>CLASS</key>
-			<string>FirstResponder</string>
-			<key>LANGUAGE</key>
-			<string>ObjC</string>
-			<key>SUPERCLASS</key>
-			<string>NSObject</string>
-		</dict>
-		<dict>
-			<key>CLASS</key>
-			<string>NSObject</string>
-			<key>LANGUAGE</key>
-			<string>ObjC</string>
-		</dict>
-		<dict>
-			<key>CLASS</key>
-			<string>SUStatusController</string>
-			<key>LANGUAGE</key>
-			<string>ObjC</string>
-			<key>OUTLETS</key>
-			<dict>
-				<key>actionButton</key>
-				<string>NSButton</string>
-				<key>progressBar</key>
-				<string>NSProgressIndicator</string>
-			</dict>
-			<key>SUPERCLASS</key>
-			<string>SUWindowController</string>
-		</dict>
-	</array>
-	<key>IBVersion</key>
-	<string>1</string>
-</dict>
-</plist>

macosx/Sparkle.framework/Versions/A/Resources/SUStatus.nib/info.nib

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>IBFramework Version</key>
-	<string>670</string>
-	<key>IBLastKnownRelativeProjectPath</key>
-	<string>Sparkle.xcodeproj</string>
-	<key>IBOldestOS</key>
-	<integer>5</integer>
-	<key>IBOpenObjects</key>
-	<array>
-		<integer>6</integer>
-	</array>
-	<key>IBSystem Version</key>
-	<string>10A96</string>
-	<key>targetFramework</key>
-	<string>IBCocoaFramework</string>
-</dict>
-</plist>