Add TODO list to schematic.
Import version of `atmel.lib` from <https://raw.github.com/KiCad/kicad-library/ed1b4733563014e8e1b31147cb90239def444825/library/atmel.lib> so we can use the AVR-ISP-6 schematic symbol. [Note: It's LGPL licensed.]
Add imported library to project.
Add ISP connector section.