Bugfix release
- Import Grid from XYZ: wrong 'separator'
- pointcloud_tools/pc_isolated_points_filter: use 3d search engine
- saga_api, clipper: quick fix for clipper2 with some gcc versions
- saga_gdi/3d_view_dialog: stop sequence playing before exiting dialog

Reported by:	portscout, Repoloy
MFH:		2023Q2

(cherry picked from commit 6c94859e17a68956960dd3b02c45642eef6ee5be)

Changelog: https://sourceforge.net/p/saga-gis/wiki/Changelog%209.0.1/

Reported by:	Repology
MFH:		2023Q2

(cherry picked from commit 74e3927508613943acbf6cad75490b59bfee4d48)

Major release with serveral features and bugfixes[1]. With some backwards incompatible API changes.

Some of the highlights are:
- Readme added with licensing hints
- Better UTF-8 support
- Add support for sLong datatype
- Several fixes for db_pgsql
- PostgreSQL: support loading geometry collections
- Grid calculator: functions added, better formula parsing
- Grid calculator: expression replacement option added
- Several enhancements to 3D viewer
- Reorganize python files, some Python related fixes
- helper/saga_python_version_tester.py, script added
- Remove qhull dependency

Changelog: https://sourceforge.net/p/saga-gis/wiki/Changelog%209.0.0/attachment/changelog_saga_9.0.0.txt

- Fix parsing date parameters in saga_cmd/tool
- Fix grid_gridding for gcc, strdup(key)
- Fix wkb/sql multipoint coding in saga_api
- Fix saga_gdi/3d_view_canvas axis labeling
- and more ...

Changelog: https://sourceforge.net/p/saga-gis/wiki/Changelog%208.5.1/attachment/changelog_saga_8.5.1.txt

MFH:		2023Q1

- Improvements to the 3D viewer
- Table calculator with better ui
- New tool Terrain Flooding
- Better handling for gdal imports
- Corrected Visibility Analysis
- New features and fixes for many tools ...

Changelog: https://sourceforge.net/p/saga-gis/wiki/Changelog%208.5.0/attachment/changelog_saga_8.5.0.txt

Reported by:	portscout, Repology

As of March 2016, SAGA does not use Jasper anymore[1].

[1] https://sourceforge.net/p/saga-gis/code/ci/f08da3f558d46f97403cb6468801012c5dcbf875

Release notes:
https://proj.org/news.html#id37

Also remove proj-data dependency.

You can use proj to retrieve data or install graphics/proj-data
manually.

Fixes serveral tools, most noteworthy for FreeBSD users in Visibilty Analysis,
pj_proj4/crs_transform, io_gdal/gdal_driver, saga_gui/data_source_pgsql,
saga_api/projections, saga_api/CSG_Colors, Split Lines with Lines, and
saga_gdi/3d_view_canvas

Changelog: https://sourceforge.net/p/saga-gis/wiki/Changelog%208.4.1/attachment/changelog_saga_8.4.1.txt