SeedSigner 0.2.0 with Optical Signing

Ability to generate xpub keys and sign transactions via QR codes added to this version! See the current project readme for further information! To install on a MicroSD, download the file "seedsigner_0_1_0.zip", extract the .img file file, and write that image to a MicroSD card (at least 4GB in size). Help can be found on Telegram at https://t.me/joinchat/GHNuc_nhNQjLPWsS