some extra test cases for day < 10 and floating timezone
The examples given in the RFC and elsewhere use a single-digit day-of-month

URL: https://rt.cpan.org/Ticket/Display.html?id=94556
invalid timezones are set to "floating", and "floating" is shown as -0000

URL: https://rt.cpan.org/Ticket/Display.html?id=94556

Meanwhile, UTC/GMT and timezones with no offset to UTC are shown as +0000
update MANIFEST
Merge branch 'rt-94556'

Conflicts:
	lib/DateTime/Format/Mail.pm
depend on a somewhat later version of DateTime

URL: https://rt.cpan.org/Ticket/Display.html?id=74580
there's no point in testing signature when the tarball is not signed
update AUTHORS with the new maintainer and several bug reporters
merge AUTHORS and CREDITS in a single file
whitespace patch
make it clear who "me" is in the THANKS section
a nicer link to RT
remove files generated by dzil
$VERSION is also handled by dzil
dzil configuration file
Merge branch 'dzil'
dzil stuffs all licenses in a single file
add the new maintainer
be consistent with the date format used in the Changes file
not needed by dzil