CI/CD Adding automatic pipeline tests (#153)

* Support for pipelines endpoint

* pipelines

* Adding assert

* Adding lock

* Refactor initialization

* Cleanup

* yaml update

* Using async initialize

* Cleanup

* throwing if retries consumed

* Removing TestClassData

* Renames

Merge pull request #150 from mkolt/2.3.0

Bump version to 2.3.0.

What comes in 2.3.0 is new public interface ICheckpointPartitionProcessorFactory and corresponding ChangeFeedProcessorBuilder.WithCheckpointPartitionProcessorFactory method.

New factory is extension of IPartitionProcessorFactory and its Create method, in addition to ILease and IChangeFeedObserver that are passed to IParitionProcessorFactory.Create, also takes ILeaseCheckpointer, so that it be used to create partition processor that can take advantage of built-in checkpointing mechanism.

Merge pull request #147 from mkolt/users/mkolt/2.2.8

Bump version to 2.2.8

Propagate DocumentClientException from ProcessChangesAsync (#127)

Fix DocumentClientExceptions happening in user code and affecting Processor logic