Bumped required HTTP::Tiny and Test::More versions in Makefile.PL
Better compatibility with CGI.pm < 3.36

HTTP::Server::Simple <= 0.44 sets $ENV{HTTP_COOKIE} with comma-separated
multiple values, which causes old CGI.pm to freak out as it only knows
how to handle semicolon separated values. We're monkey patching the base
server class to avoid that; funny thing is that the failures crept up
in RPC::ExtDirect::Client tests that this fix should eliminate.
Updated Makefile.PL dependency versions
Tests will clean up %ENV to avoid HTTP::Tiny using proxies
Updated Changes
Updated MANIFEST