[addon attach] Implement detach method (Bump to 0.20)

addons/attach/attach.js

@@ -25,14 +25,30 @@
       bidirectional = (typeof bidirectional == 'undefined') ? true : bidirectional;
       this.socket = socket;
 
-      socket.addEventListener('message', function (ev) {
+      term._getMessage = function (ev) {
         term.write(ev.data);
-      });
+      };
+        
+      term._sendData = function (data) {
+        socket.send(data);
+      };
+
+      socket.addEventListener('message', _getMessage);
 
       if (bidirectional) {
-        this.on('data', function (data) {
-          socket.send(data);
-        });
+        this.on('data', _sendData);
       }
+      
+      socket.addEventListener('close', term.detach.bind(term, socket));
+      socket.addEventListener('error', term.detach.bind(term, socket));
+    };
+    
+    Xterm.prototype.detach = function (socket) {
+      var term = this;
+
+      term.off('data', term._sendData);
+      socket.removeEventListener('message', term._getMessage);
+
+      delete term.socket;
     };
 });

bower.json

@@ -1,5 +1,5 @@
 {
   "name": "xterm.js",
-  "version": "0.18",
+  "version": "0.20",
   "ignore": ["demo", "docs", "test", ".gitignore"]
 }

docs/conf.py

@@ -51,9 +51,9 @@ copyright = u'2014, SourceLair Limited'
 # built documents.
 #
 # The short X.Y version.
-version = '0.18'
+version = '0.20'
 # The full version, including alpha/beta/rc tags.
-release = '0.18 Alpha'
+release = '0.20 Alpha'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.