Bump maxVersion to 53.0a1

Quicksaver · Quicksaver · commit 742551a20d4c · 2016-11-15T10:47:08.000Z
diff --git a/install.rdf b/install.rdf
@@ -24,7 +24,7 @@
 			<Description>
 				<em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
 				<em:minVersion>45.0</em:minVersion>
-				<em:maxVersion>52.0a1</em:maxVersion>
+				<em:maxVersion>53.0a1</em:maxVersion>
 			</Description>
 		</em:targetApplication>
 
