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What's Changed Optimize some vector operations by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/90 Add a way to create a tensor view of a pointer by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/92 Add python bindings by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/87 Update IndexUtils.hpp by @jturney in https://github.com/Einsums/Einsums/pull/95 Einsums Restructuring by @jturney in https://github.com/Einsums/Einsums/pull/97 Fix print. by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/102 Docs: Docs were not deploying by @jturney in https://github.com/Einsums/Einsums/pull/104 Fix performance issues by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/107 Fix parsing bug by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/110 Fix performance again by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/111 Fixing docs by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/101 Docs: Tweaks for consistency. by @jturney in https://github.com/Einsums/Einsums/pull/120 Move Design Patterns by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/121 Full Changelog: https://github.com/Einsums/Einsums/compare/v0.6.1...v1.0.0 

What's Changed Fix a missing typename on svd. by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/148 Full Changelog: https://github.com/Einsums/Einsums/compare/v1.0.1...v1.0.2 

Bring in fixes for Python builds. Full Changelog: https://github.com/Einsums/Einsums/compare/v1.0.2...v1.0.3 

Full Changelog: https://github.com/Einsums/Einsums/compare/v1.0.0...v1.0.1 

What's Changed Fixed a typo by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/160 Bring indices into parity with devel. by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/166 Fixed a bug with the handling of block tensors in einsum by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/171 Update release version by @cgbriggs99 in https://github.com/Einsums/Einsums/pull/176 Full Changelog: https://github.com/Einsums/Einsums/compare/v1.0.3...v1.0.4 

Forte is an open-source library specialized in multireference electronic structure theories for molecular systems and the rapid prototyping of new methods. This paper gives an overview of the capabilities of Forte, its software architecture, and examples of applications enabled by the methods it implements. 

The many-body expansion (MBE) is promising for the efficient, parallel computation of lattice energies in organic crystals. Very high accuracy should be achievable by employing coupled-cluster singles, doubles, and perturbative triples at the complete basis set limit [CCSD(T)/CBS] for the dimers, trimers, and potentially tetramers resulting from the MBE, but such a brute-force approach seems impractical for crystals of all but the smallest molecules. Here, we investigate hybrid or multi-level approaches that employ CCSD(T)/CBS only for the closest dimers and trimers and utilize much faster methods like Møller–Plesset perturbation theory (MP2) for more distant dimers and trimers. For trimers, MP2 is supplemented with the Axilrod–Teller–Muto (ATM) model of three-body dispersion. MP2(+ATM) is shown to be a very effective replacement for CCSD(T)/CBS for all but the closest dimers and trimers. A limited investigation of tetramers using CCSD(T)/CBS suggests that the four-body contribution is entirely negligible. The large set of CCSD(T)/CBS dimer and trimer data should be valuable in benchmarking approximate methods for molecular crystals and allows us to see that a literature estimate of the core-valence contribution of the closest dimers to the lattice energy using just MP2 was overbinding by 0.5 kJ mol−1, and an estimate of the three-body contribution from the closest trimers using the T0 approximation in local CCSD(T) was underbinding by 0.7 kJ mol−1. Our CCSD(T)/CBS best estimate of the 0 K lattice energy is −54.01 kJ mol−1, compared to an estimated experimental value of −55.3 ± 2.2 kJ mol−1.