Add pedigree_kinship sgkit-dev#845

Author: timothymillar

docs/api.rst

@@ -92,6 +92,7 @@ Methods
    maximal_independent_set
    observed_heterozygosity
    pbs
+   pedigree_kinship
    pc_relate
    regenie
    sample_stats
@@ -173,9 +174,12 @@ By convention, variable names are singular in sgkit. For example, ``genotype_cou
     variables.stat_Garud_h12_spec
     variables.stat_Garud_h123_spec
     variables.stat_Garud_h2_h1_spec
+    variables.stat_Hamilton_Kerr_lambda_spec
+    variables.stat_Hamilton_Kerr_tau_spec
     variables.stat_identity_by_state_spec
     variables.stat_observed_heterozygosity_spec
     variables.stat_pbs_spec
+    variables.stat_pedigree_kinship_spec
     variables.stat_Tajimas_D_spec
     variables.stat_Weir_Goudet_beta_spec
     variables.traits_spec

sgkit/__init__.py

@@ -32,7 +32,7 @@
 from .stats.ld import ld_matrix, ld_prune, maximal_independent_set
 from .stats.pc_relate import pc_relate
 from .stats.pca import pca
-from .stats.pedigree import parent_indices
+from .stats.pedigree import parent_indices, pedigree_kinship
 from .stats.popgen import (
     Fst,
     Garud_H,
@@ -81,6 +81,7 @@
     "ld_prune",
     "maximal_independent_set",
     "parent_indices",
+    "pedigree_kinship",
     "sample_stats",
     "variant_stats",
     "diversity",