Remove gitmodules

Integrate api and lang into core

src/api/java/appeng/api/networking/IGridConnection.java

@@ -0,0 +1,58 @@
+package appeng.api.networking;
+
+import net.minecraftforge.common.util.ForgeDirection;
+
+/**
+ * Access to AE's internal grid connections.
+ * 
+ * Messing with connection is generally completely unnecessary, you should be able to just use IGridNode.updateState()
+ * to have AE manage them for you.
+ * 
+ * Don't Implement.
+ */
+public interface IGridConnection
+{
+
+	/**
+	 * lets you get the opposing node of the connection by passing your own node.
+	 * 
+	 * @param gridNode current grid node
+	 * @return the IGridNode which represents the opposite side of the connection.
+	 */
+	IGridNode getOtherSide(IGridNode gridNode);
+
+	/**
+	 * determine the direction of the connection based on your node.
+	 * 
+	 * @param gridNode current grid node
+	 * @return the direction of the connection, only valid for in world connections.
+	 */
+	ForgeDirection getDirection(IGridNode gridNode);
+
+	/**
+	 * by destroying a connection you may create new grids, and trigger un-expected behavior, you should only destroy
+	 * connections if you created them.
+	 */
+	void destroy();
+
+	/**
+	 * @return node A
+	 */
+	IGridNode a();
+
+	/**
+	 * @return node B
+	 */
+	IGridNode b();
+
+	/**
+	 * @return if the connection is invisible this returns false
+	 */
+	boolean hasDirection();
+
+	/**
+	 * @return how many channels pass over this connections.
+	 */
+	int getUsedChannels();
+
+}