Code style changes.

Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Have the LoG and DoG detectors accept single-column images.

Internally, squeezing the X dimension results in having a rotated image
(the raw image is seen as a single line image) and a corrupted
calibration array.
This is handled by the TrackMate class for the rotation (it is anyway
responsible for the squeezing) and by factories for the calibration.
Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Have the downsample detector accept single-column images.

Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Code style changes.

Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Have the Spot icon grabber accept 1D images.

This fixes #55.
Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>