2.8.0

In this release there are some new features and some bug fixes and we welcome Nick Ham to the contributors to the package.

New Features in Version 2.8.0

The new features in this release are contributed by Nick Ham:

• ApsisMonoid
• CrossedApsisMonoid
• ModularPartitionMonoid
• PlanarModularPartitionMonoid
• PlanarPartitionMonoid
• PlanarUniformBlockBijectionMonoid
• SingularApsisMonoid
• SingularCrossedApsisMonoid
• SingularModularPartitionMonoid
• SingularPlanarModularPartitionMonoid
• SingularPlanarPartitionMonoid
• SingularPlanarUniformBlockBijectionMonoid
• SingularUniformBlockBijectionMonoid
• UniformBlockBijectionMonoid

Issues Resolved in Version 2.8.0

• Issue 160 IrreundantGeneratingSubset behaved incorrectly when given a semigroup whose generating set consisted of a single repeated element. [Wilf Wilson]
• Issue 164 MatrixEntries
  gave an error for Rees 0-matrix semigroups whose matrices contain 0. [Wilf Wilson]
• Some tests failed when GAP was compiled in 32-bit mode. [Michael Torpey]