In case of migration's version less than or equal 1.0.0 unhandled exception occurres

[Arthur Osmokiesku]

Min version of your migration must be greater than 1.0.0. If your migration version less than or equal Version(1, 0, 0) then Runner will thrown exception "Sequence contains no elements" with next stacktrace:

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at System.Linq.Enumerable.Last[TSource](IEnumerable`1 source)
   at MongoDBMigrations.MigrationLocator.GetMigrations(Version currentVersion, Version targetVerstion)
   at MongoDBMigrations.MigrationRunner.UpdateTo(Version targetVersion)
   at MongoDBMigrations.MigrationRunner.UpdateToLatest()

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[Arthur Osmokiesku]

Fixed #2 and #1 decrese database version with multiples migrations

→ <<cset b698e25b4896>>