The subject line is written by mutt.
While at it also start emacs in text mode for editing the changelog.
Signed-off-by: Daniel Wagner <daniel.wagner@siemens.com>
This commit adds initial files for the Sphinx documentation system and
expanded checkcode.sh to include `doc8` as documentation checker. Also
added this checker to the dependencies for travis CI.
Signed-off-by: Claudius Heine <ch@denx.de>