v0.9.26

What's Changed

• Speed up equality elimination and relative position Jacobian by @Gregwar in #35
• Revert null-space basis projection of constraints in Problem by @Gregwar in #36
• Fix Expression operators with constants and mean() by @Gregwar in #37
• Fix missing cross terms in the Hessian when use_sparsity is enabled by @Gregwar in #38
• Speed up soft inequalities assembly, fix them without equality rewriting by @Gregwar in #39

Full Changelog: v0.9.25...v0.9.26