Stash.
Valid flattening, invalid date formatting.
Signature validation now performed on the JSON structure, not a statically typed representation of it.
Tidying JSON flattener.
Deleted old code.
Removing reference to system.web.
Adding SignatureValidator.cs as a reference to .NET 2.0 project.
Reverting Utils change.
Bumping assembly version.
Adding nupkg.
Merge pull request #13 from gocardless/alex-fu

Replace webhook signature validator