v0.4.0

What's Changed

• 💥 extract ancient alleles from ensembl compara by @bunop in #16
• 📝 document project using jupyter-book by @bunop in #19
• 🔖 release v0.4.0 by @bunop in #17
• ✨ try to define a GitPod image by @bunop in #21

Full Changelog: v0.3.1...v0.4.0