Hangfire.Core 1.5.0

http://hangfire.io/blog/ 1.5.0 * Added – `IBackgroundProcess` interface that allows to implement custom background processes. * Added – `BackgroundProcessingServer` class for creating a server instance with completely custom background processes. * Added – Support for running multiple `BackgroundJobServer` instances in the same AppDomain without explicit server names. * Added – `JobActivatorScope` class to support custom IoC scopes/lifetimes. * Added – Allow to specify a custom queue for recurring jobs (by @maleet). * Added – Allow to use CancellationToken type as a job method parameter. * Added – It is now possible to query the storage in state applying filters. * Added – Allow to pass custom filters to `BackgroundJobServer` via options. * Added – Option to hide the "Back to site" link (by @dradovic). * Changed – Server components and background processes now use `Task` with `TaskCreationOptions.LongRunning`. * Changed – ServerIds are now generated without ServerName, server names are deprecated. * Changed – Arguments Renderer now supports TimeSpan and DateTime (by @yngndrw). * Changed – Minor improvements for Dashboard navigation (by @pwelter34). * Changed – Worker does not process a job when a transition to the Processing state failed (by @yngndrw). * Changed – `BackgroundJobClientException` is thrown instead of `CreateJobFailedException`. * Changed – WorkerId is now auto-generated and based on a GUID. * Changed – Use StackTraceFormatter package for marking-up stack traces (by @atifaziz). * Changed – Updated Dashboard CSS to Twitter Bootstrap 3.3.5. * Fixed – Prevent worker from fetching and processing a job on shutdown. * Fixed – `TaskCanceledException` thrown from a job method leads to failed job as expected. * Fixed – Make `DelayedJobScheduler` resilient to empty background job ids. * Fixed – Logical error in SqlServerDistributedLockTimeout value check (by @Tom-Kelly). * Fixed – `OverflowException` in Dashboard when job duration exceeds int.MaxValue (by @mavenius). * Fixed – "More details" button in Dashboard changes to "Less details" when collapsed (by @pascalberger).