Syntax:
trackstack
trackstack(cellList1)
cellList2 = trackstack
cellList2 = trackstack(cellList1)
cellList2 = trackstack([cellList1],[weights],[cutoff])
This function processes a cell list obtained by MicrobeTracker in 'Individual
Frames' mode attempting to assign the same number of the same cell on every
frame of the list. It is designed to be used for moving cells in the case that
the motion is too large to use the 'timelapse' mode.

<cellList1>  input cell list. If not supplied, the program will request to open a file with the
list.

<cellList2>  output cell list. If not supplied, the program will
request to select a file to write the data to.

weights  4element vector of weight coefficients for calculating the
"cost" of assignment of a cell between two frames, consisting of 4
components (see figure):
 distance perpendicular to the mean main axis (Δx_{‖}),
 distance along the mean main axis (Δx_{┴}),
 angle (Δα, in radians),
 log ratio of the areas.
The lower a value is, the less effect the component will have on the
assignment. Default: [0.2 1 1 1].

cutoff  cutoff in units of the mean distance to the nearest (in terms of
the cost) neighbor. Larger values will force to assign most cells, lower
values  to lose those that don't have a good match. Default: 1.
