Release v1.7

This release improves trace processing through the use of modern routines for
instrument correction, optional baseline removal, a new clipping detection
algorithm and a better definition of signal and noise time windows.

A new plot is introduced, "stacked spectra" which allows to compare all the
spectra at once (and easily detect problematic stations 😉).
Also, a new command line tool, plot_sourcepars, allows making aggregate
plots of source parameters for many events (starting from the SQLite database).

New config file parameters have been added, while some have been removed.
Please run source_spec -U CONFIG_FILE_NAME to update your old config file.

As always, many bugfixes and improvements have been made in this release.
Thanks to all the users who took time to write and ask questions (by mail
or using the official SourceSpec [Discussions]).

Big kudos to Kris Vanneste [@krisvanneste] who helped all along the development
with code review and testing and submitted pull requests on noise windows and
clipping detection.

Check out the full Changelog.