Attempt to fix selector memeory leak. Add update checker

common/src/main/java/com/stardust/util/DeveloperUtils.java

@@ -0,0 +1,22 @@
+package com.stardust.util;
+
+import android.support.annotation.Nullable;
+
+/**
+ * Created by Stardust on 2017/4/5.
+ */
+
+public class DeveloperUtils {
+
+    private static final String PACKAGE_NAME = "com.stardust.scriptdroid";
+
+    public static void ensureRunningPackageNotSelf(@Nullable String runningPackage) {
+        if (PACKAGE_NAME.equals(runningPackage)) {
+            throw new SecurityException();
+        }
+    }
+
+    public static boolean isRunningPackageSelf(@Nullable String runningPackage) {
+        return PACKAGE_NAME.equals(runningPackage);
+    }
+}