Add most formatting-only commits to this file so that when used with
git blame, these commits are excluded and the output shows only the
interesting bits.
This commit adds many new sections to the existing "Developing and building
MicroPython" chapter to make it all about the internals of MicroPython.
This work was done as part of Google's Season of Docs 2020.
Damien George
stijn
nanjekyejoannah