• Alien::Base::Wrapper->mm_args2 no longer overwrites a caller-specified
  CONFIGURE_REQUIRES version with its own, lower, requirement. Instead
  the newer of the two version numbers is used (gh#428, gh#429, gh#439,
  johannessen++)
  
• Fetch::Wget plugin now treats Wget2 (which some newer Linux
  distributions ship as /usr/bin/wget in place of GNU Wget) as not
  found, the same as it already does for the BusyBox wget, since it
  does not follow the same interface as GNU Wget. (gh#439)