• Fix typos (reminder -> remainder etc.) (Peter John Acklam)
  
• Fix Math::BigInt::Calc::_num returning NaN, not Inf, when it overflowed
  (Peter John Acklam) (Closes: RT #25274).
  
• Fix Math::BigFloat->bcmp() so it can handle arbitrarily large exponents
  (Peter John Acklam) (Closes: RT #62764).
  
• Fix bmodpow() in Math::BigInt 1.99 mis-calculating powers of one
  (Peter John Acklam) (Closes: RT #63237).
  
• Fix bmodpow() and bmodinv() in Math::BigInt to handle negative input
  (Peter John Acklam) (Closes: RT #61543)
  
• Clean up whitespace (Nicholas Clark).
  
• Added file t/00-signature.t for testing SIGNATURE (Peter John Acklam).