Paste on Mac Up/Down Arrow Keys for ease of use

Hi, I love Paste. Thank you for making it! One super simple feature request: Up and Down arrow key support for Pinboard access. When I open Paste, I desperately want to navigate to the various Pinboards using the Up arrow, then Left/Right arrows to change the Pinboard, then Down to choose a copied clipboard. Currently we have to use both keyboard and mouse, which is very frustrating to do over and over when drafting text with both hands on the keyboard. This change would make my Paste experience at least twice as speedy. Thank you for listening.