Cryogrid-pytools

More flexible loading for mutliple files

**Full Changelog**: https://github.com/lukegre/CryoGrid-pyTools/compare/v0.1.4...v0.1.5

When using `read_mat_struct_as_dataset`, you can use the following kwarg:

python
forcing = cgt.read_mat_struct_as_dataset(
fname,
index='timeForcing', must be set for index_is_datenum to work
index_is_datenum=True converts MATLAB datenum to pd.Timestamp
)


**Full Changelog**: https://github.com/lukegre/CryoGrid-pyTools/compare/v0.1.3...v0.1.4

A more generalised approach to reading in MATLAB files was taken.
Some other bugs also fixed.

**Full Changelog**: https://github.com/lukegre/CryoGrid-pyTools/compare/v0.1.2...v0.1.3