###Usage
- Run something like hs-datahand | tee ~/dhteensy/keymaps.h to produce a header for dhteensy (https://github.com/imarko/dhteensy).
- Use it to compile with your keymap embedded.
- Run teensy_loader_cli -mmcu=at90usb1286 -w ~/dhteensy/dhteensy.hex