maybe fixes force?
shorten the "disabled" blacklist
Add use_prompt_default config option

This option can be used to set PERL_MM_USE_DEFAULT before configure,
make, test and install commands are run.  It defaults to false.
also set NONINTERACTIVE_TESTING with use_prompt_default
distroprefs: new question by IO-Socket-SSL
Compare 'undef' versions as '0'

version.pm treats the string "undef" as 0.  And "use Foo 0" will
allow undefined $VERSION.  Therefore, this commit changes any
literal "undef" versions passed to vcmp to 0 before comparision.

This fixes a bug in CPAN::Module::uptodate for modules that have
version "0" in the package list and do not define a $VERSION
in the .pm file.  Previously, it would always return false.  This
makes it return true.
mention major highlights in Changes file