2.4.18 * Support `enable` and `icons` parameters for extra menu items of the fake context menu. * [Support `icons` parameter for the `register-self` API.](https://github.com/piroor/treestyletab/wiki/API-for-other-addons#register-and-unregister) * Newly opened child tabs are placed to the correct position. * Expose detailed options for scrollbar and cache. * Collapse large input fields in the "Advanced" section of the options.