MapT async overload for Task<Option>

[MrWuffels]

Hi,

I'm new here and I don't know if this was suggested or discussed already, at least I didn't find anything.

I came across following "issue":

Func<string,Task<Option<string>>> bindTTest = str => Task.FromResult(Some("Haha"));
Func<string, Task<string>> mapTTest = str => Task.FromResult("haha");

var taskOption = GetTaskOption(); //returns Task<Option<string>>
var bindT = taskOption.BindT(x => bindTTest(x)); //returns Task<Option<string>>
var mapT = taskOption.MapT(x => mapTTest(x)); //returns Task<Option<Task<string>>>

As you can see in this little example, BindT returns a Task<Option> as expected.
MapT however returns Task<Option<Task>>, but I would expect Task<Option> like it does in BindT.
The difference is while BindT has an overload where it expects a Func with a Task as return value, MapT doesn't seem to be prepared for it. My suggestion would be adding a similar overload to MapT. Or do I miss something?