Changes in nauty 2.9.3:

• The -r and -R switches in complg were badly broken for a long time. The core functionality of complg was fine, however. As well as fixing this problem, complg has a new switch -S that outputs only the input graphs that are self-complementary.
• vcolg has a new switch -F# that says to use the group that fixes the first # vertices setwise and also to use only color 0 on the first # vertices.
• genrang has a new switch -G# that provides an approximation of random unlabelled graphs. The greater the parameter, the better the approximation and the worse the efficiency. In particular graphs whose automorphism groups have order at most # come out in the correct relative proportions.
• uniqg has a new switch -J that writes 32-byte hash codes as lines ending with \n. Note that it is still binary, but now it is good for sorting.
• A labelling error with Traces when an initial partition is specified was corrected. A minor standards violation with memcpy was also fixed. Thanks to Mathieu Dutour and Julius Kunze for reporting.
• A major rearrangement was made to the makefile to support more options. All compiles now include CPPFLAGS, which can be defined on the ./configure command. Some missing uses of LDFLAGS were added to the makefile.
• cubhamg -V -c now displays all hamiltonian cycles. In addition, cubhamg has a facility for user-written code to be called for each cycle. This is documented in the source code cubhamg.c.

All other builds are simple rebuilds due to the nauty update.