Command line version is not included

[apullin]

There should be a command line version of the bootloader that is known to work.
Humphrey uses this; it should be comitted to this repo, and the gui versions should be labeled as GUI versions in their filename.

[apullin]

The python file contains both the command line version and GUI version. Considering the GUI does not work, the code should be split into disjoint GUI and command line versions, or the default execution should not be the GUI.

[fgb]

Making the CLI default would make sense. We could add a --gui/-g option to it, relegating the GUI upgrade for a later time.