Added a new hero, Cyber Wukong

Starting to record the number of completed rounds and the highest difficulty level completed.
Added a new hero, Cyber Wukong, who can release electric pulse attacks on nearby enemies. Available after surviving for 15 rounds or more.
Added more language support.
The right-click has been unlocked, and the Flying Nimbus now only requires a single click to keep flying continuously.
The store page now includes various tooltips.
Now, self-propelled artillery will also refresh during the last few rounds of difficulty 0.
Bananas can be consumed while in high altitudes.