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0.15.4

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@wilfwilson wilfwilson released this 06 Aug 10:01

This is a minor release that fixes a few bugs.

In previous versions, the homomorphism-finding tools sometimes returned purported ‘monomoprhisms’ that were not injective. This problem was reported by Gordon Royle, see Issue #222, and fixed by James D. Mitchell in PR #223. In addition, Wilf A. Wilson fixed a bug in DigraphNrEdges. This function could previously lead to a crash when given a digraph whose OutNeighbours contained entries not in IsPlistRep.