Python 0.5.6

Breaking Changes

• tskit now requires Python 3.8, as Python 3.7 became end-of-life on 2023-06-27

Features

• Tree.trmca now accepts >2 nodes and returns nicer errors
  (@hyanwong, :pr:2808, #2801, #2070, #2611)

• Add TreeSequence.genetic_relatedness_weighted stats method.
  (@petrelharp, @brieuclehmann, @jeromekelleher,
  #2785, #1246)

• Add TreeSequence.impute_unknown_mutations_time method to return an
  array of mutation times based on the times of associated nodes
  (@duncanMR, #2760, #2758)

• Add asdict to all dataclasses. These are returned when you access a row or
  other tree sequence object. (@benjeffery, #2759, #2719)

Bugfixes

• Fix incompatibility with jsonschema>4.18.6 which caused
  AttributeError: module jsonschema has no attribute _validators
  (@benjeffery, #2844, #2840)