Tag to be used with the master branch of atlas/athena. Update(s) since 2.0.80: - CheckerGccPlugins updates for thread safety checks in IStateful::initialize and CORAL; - Added Findpygraphviz.cmake; - Fixed the RPM dependency setup in FindCairo.cmake; - Updated to onnxruntime 1.5.1; - Updated to Acts 1.2.0; - Multiple tweaks to AtlasCMake and AtlasLCG to make certain non-standard build setups possible;