This PR contains the remaining changes not applied from the previous PR, and a couple things I noticed when merging. The biggest fish is to use .NET 4 CLR hosting API; hence the title of the PR, bu ...

CreateDomain CreateDomainModel CreateDomainModelDnsRecords CreateDomainModelDnsRecordsDkimRecord CreateEmailCampaign CreateEmailCampaignEmailExpirationDate CreateEmailCampaignRecipients ...