2.19.8

Improvements

• Introduce Policy error filtering extension methods in the PoliNorError.Extensions.PolicyErrorFiltering namespace.
• Fix issue #126 by using the IDelayProvider.BackoffBackoffSafely(Async) extension methods.
• Introduce Action.InvokeWithRetryDelay extension methods.
• Introduce Action.InvokeWithRetryDelayInfinite  extension methods.
• Introduce Func<CancellationToken, Task>.InvokeWithRetryDelayAsync extension methods.
• Introduce Func<CancellationToken, Task>.InvokeWithRetryDelayInfiniteAsync extension methods.
• Introduce Func<T>.InvokeWithRetryDelay extension methods.
• Introduce Func<T>.InvokeWithRetryDelayInfinite extension methods.
• Introduce Func<CancellationToken, Task<T>>.InvokeWithRetryDelayAsync extension methods.
• Introduce Func<CancellationToken, Task<T>>.InvokeWithRetryDelayInfiniteAsync extension methods.

Small changes

• Add early return in RetryProcessor.Retry(Async)(<T>) methods if token is already canceled.
• DRY Refactoring of the use of RetryDelay in DefaultRetryProcessor methods.
• Refactor catch block exception handling in DefaultRetryProcessor.Retry(Async)<T> methods.
• Add 'Try', 'Catch' tags to nuget package.

Docs changes

• Update 'RetryPolicy' README Chapter.
• Add doc comments to CatchBlockExceptionSource.
• Bump NUnit from 4.1.0 to 4.2.1.
• Bump NUnit from 4.2.1 to 4.2.2.