changes, 1.22

packages that have been published and certified:
- GraphicalModelsMLE, a package by Carlos Amendola, Luis David Garcia Puente, Roser Homs Pons, Olga Kuznetsova, Harshit J Motwani, Elina Robeva, and David Swinarski, for maximum likelihood estimates for graphical statistical models, has been published.
- LinearTruncations, a package by Lauren Cranton Heller, David Eisenbud, and Navid Nemati for finding multigraded truncations that give linear resolutions, has been published.
- RationalMaps, a package by Karl Schwede, Daniel Smolkin, S. Hamid Hassanzadeh, and C. J. Bott, for working with rational maps, has been published.
- PseudomonomialPrimaryDecomposition, a package by Alan A. Veliz-Cuba for primary decomposition of square free pseudomonomial ideals, has been published.
- NoetherianOperators, a package by Robert Krone, Justin Chen, Marc Harkonen, Yairon Cid-Ruiz, and Anton Leykin, for numerically computing local dual spaces, Hilbert functions, and Noetherian operators, has been published.
- Jets, a package by Federico Galetto and Nicholas Iammarino, for computing jets of various algebraic, geometric and combinatorial objects, has been published.
new packages:
- HolonomicSystems, a package by Mahrud Sayrafi, Christine Berkesch, Anton Leykin, and Harrison Tsai for holonomic systems, has been added. The code was originally in the Dmodules package.
- BernsteinSato, a package by Anton Leykin and Harrison Tsai for Bernstein-Sato, has been added. The code was originally in the Dmodules package.
- PolyominoIdeals, a package by Carmelo Cisto, Francesco Navarra, and Rizwan Jahangir for binomial ideals of collections of cells, has been added.
- MatchingFields, a package by Oliver Clarke for matching fields, has been added.
- CellularResolutions, a package by Jay Yang and Aleksandra Sobieska for cellular resolutions of monomial ideals, has been added.
- SagbiGbDetection, a package by Viktoriia Borovik, Timothy Duff, and Elima Shehu for verifying whether the given generators of an ideal form the Gr"obner basis or whether the given generators of a finitely generated subalgebra of a polynomial ring are the SAGBI basis, has been added.
functionality added:
- A RingMap object may now be raised to the 0th power if its source and target agree.
- Matrices may now be joined with any type of number (not just integers) using | and ||.
- The html documentation now syntax highlights Macaulay2 code by default using Prism.
- Some improvements have been made to findProgram and runProgram.
- A specific test from a package may now be specified using tests(ZZ,Package).
- The html documentation now uses the HTML5 specification.
functionality changed in a way that could break code:
- The functions member and mutable have been renamed to isMember and isMutable, respectively. The old names still exist as synonyms, but they may be removed in a future release.
- Raising a matrix to the 0th power will now raise an error if the source and target do not agree.
- The value of a class's 1 key (used internally for getting multiplicative identities) should now be a function that takes an instance of the class and returns the multiplicative identity rather than the multiplicative identity itself.
- The function urlEncode has been moved from the OnlineLookup package to Core, and its behavior has been slightly modified.
emacs updates:
- Several new functions have been added to for sending code to an M2 process, and the code that is sent is now highlighted briefly as a visual indicator. Refer to the "Macaulay2" dropdown menu in Emacs for more.
- File locations that appear in Macaulay2 Interaction buffers are now handled using Compilation mode.
- Macaulay2 is now supported in Org Mode using ob-M2.