Add new options and export more functions

Author: antonmedv

README.md

@@ -53,10 +53,13 @@ let jar = CodeJar(editor, highlight)
 Third argument to `CodeJar` is options:
   - `tab: string` replaces "tabs" with given string. Default: `\t`.
     - Note: use css rule `tab-size` to customize size.
-  - `indentOn: RegExp` allows auto indent rule to be customized. Default `{$`
+  - `indentOn: RegExp` allows auto indent rule to be customized. Default `{$`.
     - Auto-tab if the text before cursor match the given regex while pressing Enter.
-  - `spellcheck: boolean` enables spellchecking on the editor. Default `false`
-  - `addClosing: boolean` automatically adds closing brackets, quotes. Default `true`
+  - `spellcheck: boolean` enables spellchecking on the editor. Default `false`.
+  - `catchTab: boolean` catches Tab keypress events and replaces it with `tab` string. Default: `true`.
+  - `preserveIdent: boolean` keeps indent levels on new line. Default `true`.
+  - `addClosing: boolean` automatically adds closing brackets, quotes. Default `true`.
+  - `history` records history. Default `true`.
 
 
 ```js
@@ -122,6 +125,26 @@ Return current code.
 let code = jar.toString()
 ```
 
+#### `save(): string`
+
+Saves current cursor position.
+
+```js
+let pos = jar.save()
+```
+
+#### `restore(pos: Position)`
+
+Restore cursor position.
+
+```js
+jar.restore(pos)
+```
+
+#### `recordHistory()`
+
+Saves current editor state to history.
+
 #### `destroy()`
 
 Removes event listeners from editor.