Highlights
* `Ag3`: Add `haplotypes()` and supporting functions `open_haplotypes()` and `open_haplotype_sites()`.
What's Changed
* Reverse expected/actual in tests by cclarkson in https://github.com/malariagen/malariagen-data-python/pull/53
* Raise error if zero samples selected for allele frequency calculations by cclarkson in https://github.com/malariagen/malariagen-data-python/pull/52
* Add Ag3.haplotypes() implementation and tests by alimanfoo in https://github.com/malariagen/malariagen-data-python/pull/54
**Full Changelog**: https://github.com/malariagen/malariagen-data-python/compare/v0.8.0...v0.9.0