chore(modeling): remove <connection.reconnectStart/End> command

BREAKING CHANGES:

* <connection.reconnectStart/End> commands removed
* Modeling#reconnectStart/End still available for convenience

lib/features/modeling/Modeling.js

@@ -1,4 +1,5 @@
 import {
+  assign,
   forEach,
   isArray
 } from 'min-dash';
@@ -75,9 +76,6 @@ Modeling.prototype.getHandlers = function() {
 
     'connection.updateWaypoints': UpdateWaypointsHandler,
 
-    'connection.reconnectStart': ReconnectConnectionHandler,
-    'connection.reconnectEnd': ReconnectConnectionHandler,
-
     'connection.reconnect': ReconnectConnectionHandler,
 
     'elements.create': CreateElementsHandler,
@@ -481,25 +479,23 @@ Modeling.prototype.reconnect = function(connection, source, target, dockingOrPoi
 };
 
 Modeling.prototype.reconnectStart = function(connection, newSource, dockingOrPoints, hints) {
-  var context = {
-    connection: connection,
-    newSource: newSource,
-    dockingOrPoints: dockingOrPoints,
-    hints: hints || {}
-  };
+  if (!hints) {
+    hints = {};
+  }
 
-  this._commandStack.execute('connection.reconnectStart', context);
+  this.reconnect(connection, newSource, connection.target, dockingOrPoints, assign(hints, {
+    docking: 'source'
+  }));
 };
 
 Modeling.prototype.reconnectEnd = function(connection, newTarget, dockingOrPoints, hints) {
-  var context = {
-    connection: connection,
-    newTarget: newTarget,
-    dockingOrPoints: dockingOrPoints,
-    hints: hints || {}
-  };
+  if (!hints) {
+    hints = {};
+  }
 
-  this._commandStack.execute('connection.reconnectEnd', context);
+  this.reconnect(connection, connection.source, newTarget, dockingOrPoints, assign(hints, {
+    docking: 'target'
+  }));
 };
 
 Modeling.prototype.connect = function(source, target, attrs, hints) {