v0.12.0

What's Changed

• add fixed var by @powei-lin in #16
• add fixed index by @powei-lin in #17
• bound by @powei-lin in #18
• Fix ending condition by @powei-lin in #19
• Using option by @powei-lin in #20
• Huge Refactor by @powei-lin in #21
• Add unit tests for Problem by @jumpinthefire in #22
• Create rust.yml by @powei-lin in #23

New Contributors

• @jumpinthefire made their first contribution in #22

Full Changelog: v0.8.0...v0.12.0