sourmash release notes

Please see the github releases page for detailed release notes for each version!

• sourmash v4.0 release notes
  • Major changes for 4.0
  • Refactoring, improvements, and minor bug fixes:
  • Documentation updates
  • Infrastructure and CI changes:
• sourmash v3.0 release notes
  • Highlighted changes since 2.0
• sourmash v2.0 release notes
  • Major new features since 1.0
  • Other features of note