# changes, 1.16

• The location of Macaulay2's emacs files has changed from site-lisp to site-lisp/Macaulay2, so users, after installing this version of Macaulay2, may once again need to run setupEmacs (or setup).
• new packages:
• SimplicialPosets, a package by Nathan Nichols for constructing Stanley simplicial poset rings, has been added.
• SlackIdeals, a package by Amy Wiebe and Antonio Macchia for slack ideals of polytopes and matroids, has been added.
• PositivityToricBundles, a package by Andreas Hochenegger for checking positivity of toric vector bundles, has been added.
• SparseResultants, a package by Giovanni Staglianò for computations with sparse resultants, has been added.
• DecomposableSparseSystems, a package by Taylor Brysiewicz, Jose Israel Rodriguez, Frank Sottile, and Thomas Yahl for solving decomposable sparse systems, has been added.
• MixedMultiplicity, a package by Kriti Goel, Sudeshna Roy, and J. K. Verma for mixed multiplicities of ideals, has been added.
• ThreadedGB, a package by Sonja Petrovic, Sara Jamshidi Zelenberg, and Tanner Zielinski for computing a Groebner basis using the classical Buchberger algorithm with multiple threads, has been added.
• PencilsOfQuadrics, a package by Frank-Olaf Schreyer, David Eisenbud, and Yeongrak Kim for Clifford algebras of pencils of quadratic forms, has been added.
• VectorGraphics, a package by Paul Zinn-Justin for producing scalable vector graphics, has been added.
• packages that have been published and certified:
• DeterminantalRepresentations, a package by Justin Chen and Papri Dey for computing determinantal representations, has been published.
• Seminormalization, a package by Karl Schwede and Bernard Serbinowski for computing seminormalization of rings, has been published.
• SumsOfSquares, a package by Diego Cifuentes, Thomas Kahle, Pablo A. Parrilo, and Helfried Peyrl for sums of squares, has been published.
• The CompleteIntersectionResolutions package now has an implementation of the dual of the (infinite) Tate resolution of any module over a complete intersection $R$ as a finitely generated module over $R[t_1..t_c]$, the ring of Eisenbud operators. As a byproduct, this gives another method for computing the global $Ext_R(M,N)$. Also implemented layered resolutions (in the sense of Eisenbud-Peeva) of Cohen-Macaulay modules over $R$.