fix(conga): fix calibration and room coordinates scaling - bump to 0.3.2 (#77) (#78)

- Override get_vacuum_points to divide crop_area by CONGA_SCALE,
  restoring calibration points to original vacuum coordinate space.
- Override async_get_rooms_attributes to divide room outline and
  centre x/y by CONGA_SCALE, restoring room data to vacuum space.
- Bump version to 0.3.2.

Author: sca075