Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.66:
  - Made atlas_install_python_modules(...) once again execute post-build commands on files in sub-directories correctly;
    * Fixed how atlas_install_generic(...) (and atlas_install_python_modules(...)) would deal with file/directory names that match a CMake keyword;
  - Made flake8_atlas process sub-directories correctly.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.65:
  - Moved POST_BUILD_CMD into atlas_install_generic(...), and made it a list type parameter;
    * Also updated the handling of ATLAS_PYTHON_CHECKER to deal correctly with list variables;
  - Updated flake8_atlas not to fail when no python files are given to it, in case the user makes a mistake that would result in this.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.64:
  - Forced GeoModelCore to be built with optimisations, even in Debug builds;
  - Updated the AtlasLCG modules to consistently set up <PACKAGE>_<executable>_EXECUTABLE variables for externals that provide executables;
  - Updated FindXercesC.cmake to wrap CMake's own FindXercesC.cmake module;
  - Updated GPerfTools to use Findgperftools.cmake instead of Findtcmalloc.cmake;
  - Updated atlas_build_run.sh to handle quoted commands correctly;
  - Fixed the build of Python 2.7 on systems that don't provide Python 2 in /usr;
  - Updated GDB to version 9.1;
  - Command-line usage improvements in flake8_atlas;
  - Removed the EXTRA_PATTERNS argument from atlas_add_test(...).

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.63:
  - Updated MCUtils to version 1.3.4;
  - Fixed the (standalone) build of Boost on macOS Catalina;
  - Updated Acts to version v0.22.00, and switched to picking it up from GitHub;
  - Turned off the unit tests for onnxruntime, thereby fixing its Clang 9 build.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Bumped the version of MCUtils to 1.3.4 in AnalysisBaseExternals and AthAnalysisExternals;
  - Removed the unnecessary -c argument from the CINT dictionary generation calls;
  - Enabled the build of Minuit2 for/with ROOT 6.18/04.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.62:
  - Removed the clang specific patch from the Acts build, as the patch is now part of the Acts code itself;
  - Removed the deprecated -c flag from the CINT dictionary generation commands.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.61:
  - Updated FindCLHEP.cmake to set up the correct RPM dependency for LCG_97+.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.60:
  - Added new checks and warnings to CheckerGccPlugins;
  - Updated the versions of GeoModelCore, GeoModelIO and GeoModelTools;
    * Re-enabled the build of GeoModelTools in AthenaExternals at the same time.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.59:
  - Updated the version of GeoModelCore and GeoModelIO to 3.1.1;
    * Added a package for building GeoModelTools, but kept the package excluded from AthenaExternals for now;
    * Being able to compile GeoModelTools in a standalone setup also required adding a package for building XercesC;
  - Updated to Acts 0.18.0;
  - Cherry picked the missing macOS Catalina fixes from the 1.0 branch;
  - Added multiple updates to CheckerGccPlugins;
  - Taught flake8_atlas to recognise even more ways in which people may set the OutputLevel on components explicitly;
  - Added some fixes to AtlasLCG and VP1LightExternals to make it possible to build that project in "standalone mode" once again;
  - Added a fix to atlas_add_test(...), so that it would report failures correctly when post.sh is not available during the build.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.58:
  - Added onnxruntime-1.1.1 to AthenaExternals;
  - Updates to CheckerGccPlugins for allowing thread-unsafe functions in certain situations without warnings;
  - Updated AtlasCMake/scripts/cmakeNightlyInstall.sh to know about the latest LCG repositories;
  - Suppressed a warning from Clang when generating dictionaries using Ninja as the build system;
  - Updated AthAnalysisExternals to use LCG_96b;
  - Updated all externals built by AnalysisBaseExternals to be in sync with the versions available in LCG_96b;
    * This included updating FastJet to version 3.3.2, which is used by most projects;
  - Reimplemented atlas_add_alias(...) to eliminate a dependency problem that it had;
  - Removed the build of FastJetContrib from all LCG based projects, and made all of them build a patched version of FastJet.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Updated AthAnalysisExternals to use LCG_96b;
    * Removed the build of Eigen, FastJet and FastJetContrib from the project as now "new enough" versions are coming from LCG_96b;
  - Updated all externals built by AnalysisBaseExternals to be in sync with the versions available in LCG_96b.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.57:
  - Various updates to make AnalysisBaseExternals behave correctly when built on macOS.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.56:
  - atlas_add_test(...) now always runs the post-processing script (if one is defined), even if the test executable failed;
  - Updates to CheckerGccPlugins;
  - atlas_generate_cliddb(...) no longer generates/uses a dummy_clid.db file;
  - atlas_project(...) now only calls FindDoxygen.cmake if absolutely necessary;
  - Fixed the patching of Acts when building the project with Clang;
  - Added pyAMI to the list of modules built by the PyModules package;
  - Added the AthGenerationExternals project to the master branch;
    * Updated the build configurations of FastJet(Contrib) and HepMCAnalysis to accommodate the "new" project.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.55:
  - Major updates in AtlasCMake and the project configurations for CMake 3.15+ compatibility;
  - Updated the repository to use FindPython.cmake instead of FindPythonInterp.cmake and FindPythonLibs.cmake everywhere;
  - Updated Findvalgrind.cmake to set up the correct PATH environment.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Re-organised AthGenerationExternals to take FastJet(Contrib) from LCG instead of building them itself;
  - Updated all the other projects to account for these code changes.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.54:
  - Updated FindPython.cmake not to use FORCESET during the Gaudi build.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.53:
  - Updated CheckerGccPlugins for GCC 10 compatibility;
  - Updated mergeConfdb2.py to handle gaudi handle properties correctly;
  - Marked the EXTRA_PATTERNS argument of atlas_add_test(...) deprecated;
  - Introduced FindPython.cmake into AtlasLCG;
  - Fixed a typo in the Acts build configuration.

Tag to be used with the 21.X branches of atlas/athena.
Updates in this tag:
  - Added FindVBFNLO.cmake to AtlasLCG.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.52:
  - Updated the environment setup script to be a bit leaner/faster;
  - Fixed how the OptDbg package builds would use the project's README.txt file;
  - Added FindVBFNLO.cmake to AtlasLCG.

Tag to be used with the master branch of atlas/athena.
Update(s) since 2.0.51:
  - Reverted a change to FindGaudi.cmake, which broke the RPM dependency setup for Gaudi.