Version 0.48.0

[fingolfin]

Closes https://github.com/Nemocas/AbstractAlgebra.jl/milestone/1.

I'd like to make another breaking AA release soon (perhaps even this week?). PRs that would be nice to get in (could be revised):

• Remove/replace calls to PolyRing(R) and polynomial_ring_only (and deprecate both) by calls to new poly_ring helper #1729
• Forbid residue_ring for zero rings for technical reasons #1857
• Enhance performance of generic transpose and transpose! methods, restrict in-place transpose! to square matrices #1937
• Expand the common code for ideal implementations #2108
• Add alias for rels and relations #2168
• Add _upgrade and _add_gens for mpolys #2198
• Restrict generic ==(x::NCRingElem, y::NCRingElem) fallback #2212
• Address some issues reported by JET #2248
• Type param for FracField is RingElem, not RingElement #2251
• Switch delegation order of sub and getindex for submatrices #2252
• LocalizedEuclideanRing: add tests, fix some bugs, run conformance tests #2254
• Enable prepared deprecations #2261
• Add ^(I::Ideal, k::Integer) fallback method #2279

I also set up a milestone for this https://github.com/Nemocas/AbstractAlgebra.jl/milestone/1 -- this allows filtering PRs (and issues) by milestone.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.23%. Comparing base (0544067) to head (1ed53ea).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2253      +/-   ##
==========================================
- Coverage   88.24%   88.23%   -0.01%     
==========================================
  Files         126      126              
  Lines       31817    31817              
==========================================
- Hits        28076    28075       -1     
- Misses       3741     3742       +1     

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[lgoettgens]

Please do another patch release first, then bump the version to 0.48.0-DEV. And then we can start merging some of these breaking PRs.

[lgoettgens]

Please do another patch release first, then bump the version to 0.48.0-DEV. And then we can start merging some of these breaking PRs.

Forget the patch release. Some PRs marked as breaking are already merged.
For the 0.48.0-DEV bump, see #2259

[lgoettgens]

This now just needs the changelog to be updated.