Patch 'em all

+You can hold Left Control, Left Shift or Z to multiply the amount of the upgrade you are buying in the shop.
Left Control: x10
Left Shift: x50
Z: x100
(Assuming you have the money to pay for that :P)
+Fix to keep showing info about the upgrade you are browsing when the mouse is over it and level is complete.
+Highest level reached added in stats