NEW: -added alto slicered2d_syn and slicereg2d_bsplinesyn -added detection and deletion of outliner for regularization along z
NEW:
-added alto slicered2d_syn and slicereg2d_bsplinesyn
-added detection and deletion of outliner for regularization along z

3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox,3324fr/spinalcordtoolbox