v0.3.8

What's Changed

• expression: add solution attribute to expression class by @FabianHofmann in #249
• constraints & varaibles: add formatted attribute getter by @FabianHofmann in #250
• Matmul and dot operation by @FabianHofmann in #251
• test_optimization: print set of tested solvers by @FabianHofmann in #252
• run ruff by @FabianHofmann in #253

Full Changelog: v0.3.7...v0.3.8