Merge branch 'feature/638-xml-data' into feature/640-input-streams

.gitlab-ci.yml

.reuse/dep5

BasicUnitTest/SenderTests.cs

DemoRunner/SenderDemo.cs

E2ETest/E2ETest.csproj

E2ETest/EndToEndTestBase.cs

E2ETest/RejectSubmissionTest.cs

E2ETest/StraightForwardTest.cs

E2ETest/StraightPreEncryptedForwardTest.cs

FitConnect/EncryptedSender.cs

FitConnect/Encryption/FitEncryption.cs

FitConnect/Interfaces/Sender/ISender.cs

FitConnect/Interfaces/Sender/ISenderWithAttachments.cs

FitConnect/Interfaces/Sender/ISenderWithService.cs

FitConnect/Models/Submission.cs

FitConnect/Properties/AssemblyInfo.cs

FitConnect/Sender.cs

IntegrationTests/CertificateValidation.cs

IntegrationTests/Sender/SenderTestHappyPath.cs

IntegrationTests/Sender/SenderTestUnhappyPath.cs