Hangfire.SqlServer 1.5.9

http://hangfire.io/blog/ 1.5.9 * Fixed – Don't leak Dashboard UI's `READ UNCOMMITTED` isolation level to other parts of an application. * Fixed – `READ_COMMITTED_SNAPSHOT` option doesn't prevent background jobs from being processed. 1.5.8 * Changed – Disable immediate execution of a keep-alive query in queue and distributed locks. * Fixed – Background jobs may be processed multiple times. * Fixed – Keep-alive queries sometimes failing to execute. 1.5.7 * Fixed – Add missing transaction to `KeepAliveQuery` (by @maxhauser). 1.5.6 * Fixed – Use keep-alive queries to prevent SQL Azure from killing a connection after 30 minute timeout. * Fixed – Convert lock timeout value from double to int. 1.5.3 * Fixed – "Cannot release the application lock" exception when using distributed locks. 1.5.1 * Fixed – Unable to see enqueued jobs in Dashboard UI when using SQL Server queues. 1.5.0 * Added – Ability to specify the schema for SQL Server job storage (by @ryanmwright). * Added – `TransactionTimeout` option for configuring the `TransactionScope` timeout. * Added – `DashboardJobListLimit` option to prevent full table scans in Dashboard. * Changed – `SqlServerDistributedLock` class is now public. * Changed – Use `rowlock` table hint in job fetch query to prevent escalation. * Changed – Dramatically improved page load times in Dashboard. * Changed – Instant re-queue for background jobs even after ungraceful shutdown. * Changed – `JobQueue.Queue` and `Server.Id` column length increased to 50 and 100 respectively (by @maleet).