Renamed Typeatron Mark2 to MarkX as this branch is not ready to become the next version of the device (there are still some ergonomics issues to work out)
Renamed the current Typeatron Mark1 to Mark0, as the printed prototype is not fully functional and required some basic redesign.
Adding Typeatron Mark1, currently identical to Mark0 and soon to be modified to produce the first fully functional prototype.