Rewrite exterior algebra, implement Groebner bases, and peelable tableaux for northwest diagrams

[trevorkarn]

This is a meta-ticket for the Google Summer of Code project with the same name.

Tickets include:

• Rewrite Clifford and exterior algebras to have a basis indexed by integers #32369 Rewrite Clifford and exterior algebras to have a basis indexed by integers
• Subsets indexed by integers #33989 Subsets indexed by integers
• Subset_s _an_element_ #33990 Subset_s _an_element_
• Fix bug with comparison to 1 in IndexedFreeModuleElement #34084 Fix bug with comparison to 1 in IndexedFreeModuleElement
• Update documentation for EnumeratedFamily #34054 Update documentation for EnumeratedFamily
• Add __reversed__ method to FrozenBitsets #34035 Add __reversed__ method to FrozenBitsets
• Groebner bases for exterior algebras native to Sage #34138 Groebner bases for exterior algebras native to Sage
• Implement northwest diagrams #34260 Implement northwest diagrams
• Standardize jeu de taquin in tableaux documentation #34264 Standardize jeu de taquin in tableaux documentation
• Group algebra bug #34292 Group algebra bug
• Stanley symmetric functions for type A Weyl Group #34335 Stanley symmetric functions for type-A Weyl Group
• Speed up computing outside corners of partition #34343 Speed up computing outside corners of partition
• Method to get cells in horizontal/vertical border strip #34345 Method to get cells in horizontal/vertical border strip
• Add examples to Schubert polynomials documentation #34370 Add examples to Schubert polynomials documentation
• Implement Key polynomials #34414 Implement Key polynomials
• Add method to trim trailing zeros from IntegerVector #34435 Add method to trim trailing zeros from IntegerVector
• Add to check for fixed total/length in IntegerVector #34510 Add to check for fixed total/length in IntegerVector
• Expand Schubert polynomials in the Key basis #34518 Expand Schubert polynomials in terms of Key polynomials
• Make Compositions into a collections.abc.Sequence #34527 Make Compositions into a collections.abc.Sequence
• Segfault when floor dividing in infinite polynomial ring #34535 Segfault when floor dividing in infinite polynomial ring

CC: @tscrim @trevorkarn

Component: algebra

Keywords: gsoc2022

Author: Trevor K. Karn

Issue created by migration from https://trac.sagemath.org/ticket/33988