adding method for undelivery
add tests and detection of resque-scheduler for
updating readme
Redis changed their exception handling and added a new error that wasn't rescued in MessageDecoy#deliver
Merge pull request #67 from gsdean/master

adding method for undelivery
unschedule_delivery
version bump
rake update
Merge pull request #69 from yoavmatchulsky/master

Fix unhandled exception in redis v3 when offline
Update CHANGELOG.md
Add action and args as arguments for the lambda

Necessary in case resque_mailer receives a SIGTERM, in which case we need to rescue it and enqueue it for delivery (or send it immediately).
Add specs
Reraise exception
Add support for two error handlers

- Checks to see if the lambda has 3 or 5 arguments
to provide backwards compatibility and the ability
to requeue mailers
Update README.md

Update resque url
Merge pull request #73 from yujingz/patch-1

Update README.md
Update README.md
Fixed typo
Add deprecation message to error handlers with 3 arguments.
Merge pull request #72 from austenito/action_args_backwards_compatiable

Action args backwards compatiable