Next release checklist

[Shnatsel]

• Port to a SIMD library that plays well with multiversioning, e.g. Port to fearless_simd #58
• Improve bit reversal performance fearless_simd + BRAVO #64
• Investigate performance drop when not using -C target-cpu=x86-64-v3; Use x86-64-v3 architecture features for AVX2 level linebender/fearless_simd#188 and Determine SIMD level in the planner #69 help but there's more
• Deprecate or remove unused stuff like COBRA, DiF, etc. chore: Remove DIF and COBRA implementations #82
• Clean up dependencies Remove wide and multiversion dependencies #90