Always use ":leveloffset: +1" with ":doctype: book"
Headlines per ADOC file should start at level 1, not 2. Adjusting the
level offset for books helps to avoid warnings when including book
chapters, but still allows to also use the chapters as stand-alone
documents.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
Move release notes README-*.adoc to separate directory
Also move two more release-related documents.
All referenced images are now in a common subdirectory.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
Alexander Kriegisch