Replace Makefile with the avr-project template
Initial customization of Makefile with skeleton main.c
Test simple LED blinker (works!)
Migrate leds.h to LED.h
Keep build outputs in a build/ subdir that git ignores
Add skeleton UART.h for managing serial comms
Initialize baud rates using AVR setbaud.h
Flesh out UART initializations
Implement PUTC/GETC UART macros
Implement UART pass through test (it works!)
Add photo showing how to connect USBTiny programmer
Initialize packets
Copy serial # from EEPROM into the boot packet
Add synchronous serial write methods for packets (not yet tested)
Send boot packet on startup
Change USB baud rate to 57600
Send (empty) data packets once per second
Allow C99 syntax in MCU code
Bug fix in serial buffer write functions
Pass git commit info to MCU code via COMMIT_INFO #define