version 1.6.3 - "quiet ledger":
- Plotting the observed surface no longer fails when the exposures you supply are
given on a finer grid than the counts.

version 1.6.1 - "copper wire":
- The project page shows its badges again, now describes the package as
stable, and includes a chart of the method at work.
- The instructions for installing the development version now use the
recommended command.

version 1.6.0 - "clear chart":
- The documentation has been rewritten, with a new guide now published as a website.
- Windows and macOS are now tested alongside Linux.
- Fitting a short series of years no longer fails with a puzzling message.
- Summaries now show the smoothing value instead of rounding it away.
- Older versions of the packages this one relies on are no longer accepted, and
R 4.4 or newer is required.

version 1.5.1 - "steady keel":
- Help pages rebuilt so the manual renders cleanly. Results are unchanged.

version 1.5.0 - "patched sails":
- Missing values can now be smoothed over instead of ending the run.
- You can say where the age range ends instead of how wide the last group is.
- Estimates now come with intervals that always sit either side of them.
- Fitting is much faster when some groups hold no observations.
- Inputs that used to crash or return empty results are now refused with a clear message.
- Some low-level helpers are no longer available directly.

version 1.4.6 - "steady bridge":
- Internal update so the package keeps building with the upcoming version
of its numerical dependency. Results are unchanged.

version 1.4.0:
- The {rgl} package dependency has been dropped due to complications generated by it on various operating system. The package functionalities were used in the generic plcm2D plots. Now the plots are done in base R.

version 1.1.5:
- Adapt the code to the change in R 4.0.0 where matrix objects now also inherit from class "array". 

version 1.1.4:
- New LICENCE;
- Add more validation filters in order to avoid errors generated by 
inappropriate input.


version 1.1.0:
- Update following the JOSS reviewing process here
<https://github.com/openjournals/joss-reviews/issues/936>
and here <https://github.com/openjournals/joss-reviews/issues/937>;
- Fix the 3D plot for "ungrouped" mortality surface;
- Add the CITATION file.

version 1.0.0:
- First stable version on CRAN