Sage 9.8 Release Tour

[Kwankyu Lee]

It's time to work on the release tour for the upcoming 9.8 release 

https://trac.sagemath.org/wiki/ReleaseTours/sage-9.8

[Matthias Köppe]

So far we have:

1. 1. Linear algebra
      1. Submodules of tensor modules with prescribed symmetries
      2. Free module isomorphisms corresponding to fixed standard bases of …
   2. Commutative algebra
      1. Solving polynomial systems using msolve
      2. Lazy power series ring
      3. Miscellaneous
   3. Algebra
   4. Polyhedral geometry
   5. Number theory
   6. New packages and package upgrades
      1. SCIP Optimization Suite 8.0
      2. msolve: polynomial system solver
      3. Kissat SAT Solver
      4. Python 3.11
      5. Other package upgrades
   7. New tools for developers
      1. tox -e docker-...-incremental
      2. ./configure --enable-wheels
      3. make -j list-broken-packages
   8. Configuration changes
      1. Support for GCC < 8 dropped; C++17 features now available
      2. Native support for Apple Silicon (M1/M2)
   9. Availability of Sage 9.8 and installation help
      1. Sources
   10. More details