small bugfix

Signed-off-by: Alexander Skjolden <alex@plastboks.net>
small improvements

Signed-off-by: Alexander Skjolden <alex@plastboks.net>
reintroduced the exp_inc function

Signed-off-by: Alexander Skjolden <alex@plastboks.net>
change the db_write interval from @change to @interval && @change

Signed-off-by: Alexander Skjolden <alex@plastboks.net>