Necessary since commit 6e52178b.

Necessary since commit 6e52178b.

Necessary since commit d385d60c.

Rename variable id_child to part_id_child inside the mat files. This
is necessary since commit 6e52178b.

Following updates of the libraries.

Before input of `id_child` because reading `N_eddies` and `date_num` is
very quick, while reading `id_child` is long. So we do not waste time
if `N_eddies.mat` or `date_num.mat` are missing.

The name of the script cannot be the same as the name of a variable in
the script.

The name of the script cannot be the same as the name of a variable in
the script.

This is now a small part of the conversion to v6 for `overlap_v6.py`,
the other part being in `id_child.m`.

Only three files were left in cmake, not enough to justify a directory.

Change of philosophy. We do not force the choice of compiler options
from the project, we leave them to the user at configuration. We just
need to display a warning for the option `-ffpe-trap=invalid`.

This is nicer for the user than waiting for the error because
`my_date` is undefined .

Because the node indices do not start at 1 for the second date.

Preparing the addition of an additional test file, which justifies a
new directory.

Variables `id_anti_cell` and `id_cyclo_cell` contain node indices, not
eddy indices. So we check that the first value is consistent with d,
`d_init` and `e_overestim`. To decide whether we need to read
`node_id_param.json` and filter ghost eddies, we need to look into the
first Matlab file whether there is a variable `id_cyclo_cell`. So we
modify the structure of the script a little: we process the first
Matlab file before the time loop.

Clearer, instead of accessing global variable d.

So we can use the script on an SHPC converted from Matlab.

An SHPC now contains a single orientation (since after v0.12).

No need since we want all the variables in the file.

Bug fix: take into account ghost eddies in global Matlab adt
files. Some eddies are duplicated in global adt files, at the border
of the longitude domain. We should not use these ghost eddies. So
R\'emi has added variables `id_anti_cell` and `id_cyclo_cell` in adt
files. Read them. They should contain numbers from 1 to the number of
eddies, with a step of 1, intersparsed with NaN values. Check that
when reading the variables. Add an argument `cell_mask` to function
`write_to_shp` that signals ghost eddies.

Bug fix: add default values for arguments of function
`write_to_shp`. This fixes the case when the adt file is missing. The
bug comes from commit 28afccf5. For simplicity, we remove the empty
list actual argument for cell, in the case of a missing file. Then we
have to test in `write_to_shp` whether cell is None.