Define external API

src/main/java/us/camin/regions/Plugin.java

@@ -33,7 +33,7 @@ import java.util.logging.Logger;
 
 import java.util.Random;
 
-public class Plugin extends JavaPlugin {
+public class Plugin extends JavaPlugin implements RegionAPI {
     Logger log = Logger.getLogger("Regions");
     RegionManager m_regions;
     PlayerWatcher m_playerWatcher;

src/main/java/us/camin/regions/RegionAPI.java

@@ -0,0 +1,24 @@
+package us.camin.regions;
+
+/**
+ * This file is part of Regions
+ *
+ * Regions is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Regions is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Regions.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+public interface RegionAPI {
+    public void recalculatePlayerRegions();
+    public RegionManager regionManager();
+}