Python 0.6.1

Bugfixes

• Fix to TreeSequence.pair_coalescence_counts output dimension when
  provided with time windows containing no nodes (@nspope,
  #3046, #3058)

• Fix to TreeSequence.pair_coalescence_counts to normalise by non-missing
  span if span_normalise=True. This resolves a bug where
  TreeSequence.pair_coalescence_rates would return incorrect values for
  intervals with missing trees. (@natep, #3053, #3059)

• Fix to TreeSequence.pair_coalescence_rates causing an
  assertion to be triggered by floating point error, when all coalescence events are inside a single time window (@natep, #3035, #3038)

Features

• Add support for fixed-length arrays in metadata struct codec using the length property.
  (@benjeffery, #3088,#3090)

• Add a new TreeSequence.pca method that uses randomized linear algebra
  to find the top eigenvectors/values of the genetic relatedness matrix
  (@hanbin973, @petrelharp, #3008)

• Add methods on TreeSequence to efficiently get table metadata as a
  numpy structured array. (@benjeffery, #3098)

• Add Python 3.13 support (@benjeffery, #3107)

• Add a preamble argument to draw_svg() methods to allow adding arbitrary extra
  graphics (e.g. legends) to SVG plots (@hyanwong, issue:3086`, #3121)