Add the restart option to the usage string
Merge pull request #1492 from petergoldstein/feature/fix_usage_typo

Add the restart option to the usage string
Added rescue to prevent crashing on Windows

'unsupported signal SIGUSR1' occurs when running on Windows. SIGINT is supported in Windows and the rest would be ignored.
Fixes a race condition which could result in a scheduled item being added to the queue twice, or a retry being retried twice.
Removes unnecessary transaction.
Merge pull request #1496 from mperham/feature/multi-to-mget

Removes unnecessary transaction.
Merge pull request #1495 from mperham/feature/race

Fixes a race condition which could result in a scheduled item being adde...
Merge pull request #1494 from Jellyfishboy/master

Added rescue to prevent crashing on Windows
Fix sidekiqctl pidfile issues, fixes #1490
bump ver
Auto-prune old jobs from worker list, fixes #1508
version bump
merge master