v3.0.0

• Make gen_utf8 return optionally only BMP characters
  (6201b63)
• Don't install tests into the binary distribution
  (b291873, @evgeni)
• Use floor division operator in base_repr for Python 3
  compatibility (914178a, @gshefer)
• New gen_octagonal and gen_hexadecimal methods added
  (57f5d17, @gshefer)