[PROJ] PROJ 8.1.0 & PROJ-data 1.7

[Kristian Evers]

On behalf of the PROJ development team I am happy to announce the
release of PROJ 8.1.0 and PROJ-data 1.7
The packages are available from 

http://download.osgeo.org/proj/proj-8.1.0.tar.gz <http://download.osgeo.org/proj/proj-8.1.0.tar.gz>
http://download.osgeo.org/proj/proj-8.1.0.zip <http://download.osgeo.org/proj/proj-8.1.0.zip>

and

http://download.osgeo.org/proj/proj-data-1.7.tar.gz <http://download.osgeo.org/proj/proj-data-1.7.tar.gz>
http://download.osgeo.org/proj/proj-data-1.7.zip <http://download.osgeo.org/proj/proj-data-1.7.zip>

The PROJ release includes both bug fixes and new functionality. See the release
notes below. The PROJ-data release includes two new grids: fr_ign_RAF18b.tif
and au_ga_AGQG_20201120.tif. In addition the predecessor for the latter grid,
au_ga_AGQG_20191107.tif, has been removed.


/Kristian

——————

8.1.0 Release Notes
-------------------

Updates
-------

+ Database

  o Update to EPSG v10.027 (#2751)

  o Decrease DB size by using WITHOUT ROWID tables (#2730) (#2647)

  o Add a ANALYZE step during proj.db creation allowing for
    faster lookups (#2729)

  o Added a PROJ.VERSION metadata entry (#2646)

  o Added NGO48 (EPSG:4273) to ETRS89 (EPSG:4258) triangulation-based
    transformation (#2554)

  o Additions to the norwegian NKG2020 transformation (#2548)

  o ESRI projection database updated to version 12.8 (#2717)

+ API additions

  o Added proj_get_geoid_models_from_database() function that returns a list of
    geoid models available for a given CRS (#2681)

  o Added proj_get_celestial_body_list_from_database that returns a list
    of celestial bodies in the PROJ database (#2667)

  o Added proj_get_celestial_body_name() (#2662)

+ Various improvements

  o proj_trans/cs2cs: If two operations have the same accuracy,
    use the one that is contained within a larger one (#2750)

  o Share SQLite database handle among all contexts (#2738)

  o Add proj/internal/mutex.hpp as compat layer for mingw32 for std::mutex (#2736)

  o projsync: make it filter out files not intended for the current version (#2725)

  o Improvements related to DerivedVerticalCRS using Change Unit and
    Height/Depth reversal methods (#2696)

  o Update internal nlohmann/json to 3.9.1, and add a CMake option to
    be able to use external nlohmann/json (#2686)

  o createFromUserInput(): change name of CRS built from URN combined references to match the convention of EPSG projected CRS (#2677)

  o Parse compound id with two authorities, like ESRI:103668+EPSG:5703 (#2669)

  o Added projinfo option --list-crs (supports --area) (#2663)

  o Added support for hyperbolic Cassini-Soldner (#2637)

  o Added capability to get SQL statements to add custom CRS in the database (#2577)

Bug fixes
---------

o Fix 'Please include winsock2.h before windows.h' warning with msys (#2692)

o Minor changes to address lint in geodesic.c (#2752)

o BoundCRS::identify(): avoid incompatible transformation for
  WKT1 / TOWGS84 export (#2747)

o proj_create(): do not open proj.db if string is a PROJ string,
  even if proj_context_set_autoclose_database() has been set (#2735)

o Fix export of transformation to PROJ string in a particular situation
  where CompoundCRS are involved (#2721)
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