Added Undo and Redo buttons to the editor tabs, etc.

Thank you for using VRoid Studio. VRoid Studio v1.22.1 update concerns the following:

■ Updates

• Added Undo and Redo buttons to the editor tabs

• Added shortcut keys in the top left menu

• Added a menu button to the hair materials list

• Left-clicking on a selected custom item, layer, hair group, hair bundle, or accessory will now open a menu in the same way as right-clicking

• Minor updates

We will keep looking out for your comments and feedback and work towards new updates. Thank you for your continued support.

Undo and Redo buttons