Digraphs 1.15.0

What's Changed

• kernel: fix issues with assumptions in IS_ACYCLIC_DIGRAPH by @james-d-mitchell in #901
• Update codecov by @Joseph-Edwards in #903
• Improve the documentation of the Digraph encoding formats by @anujthak in #897
• Implement IsCograph with bug fixes by @frankiegillis in #904
• Add unitedgeweight digraph by @coraaked in #886
• Edge weights #7: DotEdgeWeightedDigraph by @mtorpey in #892
• Implementing Colour Refinement by @RheyaM in #905
• attr.gi code coverage by @mtorpey in #919
• Digraph decode/encode by @anujthak in #912
• Cliques coverage by @mtorpey in #923
• Correct Mutability of LineDigraph by @mtorpey in #926
• CI: use configflags instead of CONFIGFLAGS by @fingolfin in #925
• Tests for AsSemigroup with 4 arguments by @mtorpey in #927
• grahom.gi test coverage by @mtorpey in #928
• Update pdflatex command for nonstop mode by @james-d-mitchell in #933
• Update my details in PackageInfo.g by @reiniscirpons in #935
• build: support EAPS 5 by @jengelh in #937

New Contributors

• @anujthak made their first contribution in
  #897

Full Changelog: v1.14.0...v1.15.0