En route for v0.12.0

While at it, allow lineaging backward.
Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Fix saving because of recent changes in TrackMate.

Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>
Merge branch 'master' of github.com:fiji/MaMuT
Depend on the bigdataviewer-core jar now.

Tobias split the spim_viewer in 3 bundles.
Signed-off-by: Jean-Yves Tinevez <jean-yves.tinevez@pasteur.fr>