Implement support for AVR109 uploading protocol, this is used by devices like the Arduino Pro Micro - [x] re-write in typesrcipt using existing [JS implementation](https://github.com/tmpvar/chip.avr.avr109) - [x] add browser support, inspired by [benjaminaigner's proof of concept](https://github.com/benjaminaigner/avr109-webserial) - [ ] add automated test for arduino pro micro
Implement support for AVR109 uploading protocol, this is used by devices like the Arduino Pro Micro