Update Text::Autoformat to 1.74.

1.74 2015-11-28 NEILB
    - On Perl 5.22+ you could get "Negative repeat count does nothing"
      warnings. Thanks to SREZIC for RT#109838.
    - Made the mention of Text::Reform in SEE ALSO be a link.
      Thanks to MANWAR for the PR doing this.
    - Added some more entries to SEE ALSO.

1.73 2015-11-08 NEILB
    - Fixed warnings about uninitialized values in Hang.pm GH#4.
      Thanks to Jeremy Mates for the PR.
    - Changed github repo URL after changing my github username

1.72 2015-06-14 NEILB
    - Switched to Dist::Zilla, dropping both Build.PL and Makefile.PL -- phew!
    - Refactored the two cuckoo packages into separate modules,
      Text::Autoformat::Hang and Text::Autoformat::NullHang.

1.71_01 2015-06-06 NEILB
    - The changes released in 1.72 (above) were first done in a
      developer release.

1.71 2015-05-04 NEILB
    - Previous release had a problem with PAUSE, caused by the two internal
      packages not having a $VERSION. Identified and reported as PAUSE
      issue GH#170 by KENTNL++. Added $VERSION to internal packages.

1.70 2015-05-01 NEILB
    - Removed useless loading of utf8 and Data::Dumper. RJBS++
    - Only renumber ASCII-digit lists, don't touch other \d things. RJBS++

1.69_01 2015-04-25 NEILB
    - This was a developer release containing the changes subsequently
      released in 1.70 (see above).

1.69 2015-02-15 NEILB
    - Changed the internal packages Hang and NullHang to
      Text::Autoformat::Hang and Text::Autoformat::NullHang respectively.

1.68 2015-02-15 NEILB
    - Was failing on input of an empty string RT#101994. Fix from DCONWAY.
      Apologies for the confusion caused by Damian and I both releasing,
      this release should straighten things up.
    - Fixed syntax errors in Quoting section of doc. DCONWAY++

1.67 2015-01-08 NEILB
    - Got co-maint from Damian so I could put the dist on github.
      Thanks Damian!
    - Reformatted this file as per CPAN::Changes::Spec
    - Added github repo to metadata and doc

(bsiegert)