[Redis] new Redis.pm release v 1.974

[Damien Krotkine]

Hi,

The last development release seems stable enough, and cpantesters are
happy enough, so I decided to do a regular release: 1.974, on its way to
CPAN.

Changelog excerpt

   * fix #85 (PR #86) reconnect during transaction
   * merge PR #84 optimize try read sock
   * use new network code from Ivan Kruglov
   * fix sentinel tests
   * fix #81: doc for 'every' option

Plus some other minor things.

Let me know of any breakage, but also if you see any change in
performance.

dams.