Added adjust_offset
Removed offset values in _get_origin
Added adjust_offset on boot
Included _set_balloon_offset in adjust_offset
Removed fixed value of ballon_offset_y
Added adjust_offset to menu
Merge branch 'feat/adjust-base-point' into develop
Updated version 0.1.22
Added description on boot
Added description of reference point
Added v0.1.22
Merge branch 'feat/pre-v0.1.22' into develop
Merge branch 'develop'