Async helper library to allow leveraging the new ValueTuple data types in C# 7.0 to thread and run tasks with disparate return types.
var (result1, result2) = await (GetStringAsync(), GetGuidAsync());
var (policy, preferences) = await (
GetPolicyAsync(policyId, cancellationToken),
GetPreferencesAsync(cancellationToken)
).ConfigureAwait(false);