Hangfire 1.2.0

https://github.com/HangfireIO/Hangfire/releases 1.2.0 * Removed – HANGFIRE.REDIS PACKAGE MOVED TO PRO VERSION. * Added – Support for **generic types and methods** for background jobs (by @gorbach). * Added – GetDescription method to Cron (by @djrineh). * Added – Support for System.Threading.CancellationToken. * Added – Make Job(Type, MethodInfo, string[]) ctor public. * Changed – Provide a ceiling value for `WorkerCount` setting. * Fixed – Call `Dispose` method instead of `Stop` for graceful shutdown. * Fixed – ArgumentException: No conversion available between `Func` and `OwinMiddleware`. * Fixed – Updated UseRabbitMq extension method to actually use the VirtualHost property (by @gaiazov). 1.1.1 * Fixed – `IAuthorizationFilter.Authorize` method issues with `IOwinContext` interface. 1.1.0 * Added – Add ability to automatically delete job when retry attempts exceeded. Thanks to @sgrassie! * Added – Serializing job arguments to JSON: arrays, collections and custom objects are fully supported now. * Added – Job filters can access method's return value. You can also see it in the Dashboard. Thanks to @gius! * Added – Ability to plug in multiple dashboards with different storages. * Added – Method to query recurring jobs to the Storage API. * Changed – NCrontab, CronExpressionDescriptor and Microsoft.Owin dependencies merged with Hangfire.Core and internalized. * Fixed – NextExecution values are only updated upon execution. * Fixed – Force IE compatibility to edge for Intranet sites. Thanks to @jeremycook! * Fixed – Added missing event argument in Dashboard UI. Thanks to @jeremycook! * Fixed – `ArgumentNullException` is being thrown on job completion. * Fixed – CPU bursts every 0th minute caused by the `RecurringJobScheduler` class. * Fixed – Redis.FetchedJobsWatcher prohibits jobs from running longer than 15 minutes.