v4.0
Added support for API v2.4
Added support for .NET 7.0
Added support for new completion callback options
Added support for parked mail exchangers detection
Added support for specifying a custom wait time while submitting and retrieving email verification jobs
Added support for nullable annotations
Breaking change: renamed WaitingStrategy into WaitOptions and refactored the latter so that it now allows to adjust the underlying polling wait times
Breaking change: the default job submission and retrieval behavior is now to wait for the completion of jobs (but it is possible to change that through the new WaitOptions class)
Breaking change: the CompletionCallback property of the ValidationRequest and FileValidationRequest classes now points to a full fledged CompletionCallback class instead of a simple Uri
Bumped dependencies (including Newtonsoft.Json and Flurl)
Improved documentation