add codetagstyle plugin

Author: jeremyleu

ckeditor/__init__.py

@@ -1,2 +1,2 @@
-VERSION = (5, 4, 0, 1)
+VERSION = (5, 4, 0, 4)
 __version__ = '.'.join(map(str, VERSION))

ckeditor/static/ckeditor/ckeditor/plugins/codetagstyle/README.md

@@ -0,0 +1,8 @@
+Code tag in CKEditor
+==============
+
+![](http://imgur.com/LN0MAEZ.png)
+
+Install by placing in ckeditor/plugins/ and add the following to ckeditor/config.js
+    
+    config.extraPlugins = 'codeTag';

ckeditor/static/ckeditor/ckeditor/plugins/codetagstyle/icons/code.png

@@ -0,0 +1,33 @@
+CKEDITOR.plugins.add('codetagstyle', {
+  icons: 'code',
+  init(editor) {
+    var style = new CKEDITOR.style({ element: 'code' }),
+      forms = ['code'];
+
+    // Put the style as the most important form.
+    forms.unshift(style);
+
+    // Listen to contextual style activation.
+    editor.attachStyleStateChange(style, function (state) {
+      !editor.readOnly && editor.getCommand('wrapCode').setState(state);
+    });
+
+    // Create the command that can be used to apply the style.
+    editor.addCommand('wrapCode', new CKEDITOR.styleCommand(style, {
+      contentForms: forms,
+    }));
+
+    // Register the button, if the button plugin is loaded.
+    if (editor.ui.addButton) {
+      editor.ui.addButton('Code', {
+        label: 'Code',
+        command: 'wrapCode',
+        toolbar: 'insert',
+      });
+    }
+
+    editor.setKeystroke([
+      [CKEDITOR.CTRL + 75, 'wrapCode'],
+    ]);
+  },
+});