several fixes...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
updated setBase/focusImage signatures and docs...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
cleanup of .getImage(..) and some docs...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
updated version history...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>