OGRe: An Object-Oriented General Relativity Package for Mathematica

V2.0.0 (2026-05-02) After 4.5 years with no updates, a major OGRe update is finally here! This long-anticipated update includes numerous new features, improvements, and bug fixes. Many of these are due to feature requests, bug reports, and other feedback from the scientific community - submitted on GitHub, sent by email, or even discussed in person at conferences. More updates are coming soon! Breaking changes (may break pre-v2.0.0 code): Replacing all TCalc* modules with cached references: The modules for built-in tensors derived from a metric: TCalcChristoffel, TCalcEinsteinTensor, TCalcGeodesicFromChristoffel, TCalcGeodesicFromLagrangian, TCalcGeodesicWithTimeParameter, TCalcLagrangian, TCalcRicciScalar,…