Fix: Client.Transmissions property should be ITransmissions too
Fix: Client.Transmissions property should be ITransmissions too

darrencauthon/csharp-sparkpost,kirilsi/csharp-sparkpost,ZA1/csharp-sparkpost,SparkPost/csharp-sparkpost,kirilsi/csharp-sparkpost,darrencauthon/csharp-sparkpost