Fill in some stats using our repo analysis scripts in
util/release/, thank the contributors, add some prose
about notable achievements since 4.10.
Also start a new doc for 4.12.
Change-Id: I10a39081762d6e01f4040f717d36662975e4c8e9
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36948
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
