A crash when merging sets with unusual universes has been fixed. Reported by T. Feng.
A runtime error for certain examples of RegularModel has been fixed. Reported by A. Sutherland.
An internal error in GapNumbers given a divisor and a place of a curve has been fixed.
A crash which would sometimes arise when creating a large lattice of finite fields of the same characteristic has been fixed. There is also a general speedup when many default fields of the same characteristic are created in succession.
An occasional error with precision at the 53-bit cusp was fixed. Reported by M. Kirschmer.
A crash in CharacteristicPolynomial for matrices has been fixed. Reported by M. Kirschmer.
An internal error in ClassNumber(D) for D in the sieve range has been fixed. Note: there was no error for ClassGroup, etc.
A runtime error in the map returned by PicardGroup in some cases has been fixed. Reported by S. Marseglia.
A problem with precision when computing determinants of p-adic matrices was fixed.