Load memoryStream using CopyAsync

[JohnLeyva]

Make it work with Blazor WAsm

[rabanti-github]

Thanks for the contribution.
A small change about the exception handling is necessary to ensure that only one type of exception is exposed to the higher level of the library.

Also: May this modification also be necessary für the writer function? I assume the main change is this here:

                await Task.Run(() =>
                {
                    ReadZip(zf);
                }).ConfigureAwait(false);

[rabanti-github]

The try block as wrapper is still necessary since FileStream could fail with several other Exceptions than a common IOException (An own version is used anyway --> Exceptions.IOException). The only Exception that is used as interface is this mentioned IOException.
See also: .NET documentation about possible exception for FileStream

[rabanti-github]

The feature to load workbooks as stream or file asynchronously was implemented in Release v2.4.0.
I had to adapt some things, but I hope, I have implemented your PR feature correctly.
Because of the adaptions, this PR will not be merged. However, your are mentioned in the changelog as origin of the adaptions.
Please let me know in a new issue, when something is not working as expected.
Note: This PR will be closed within the next weeks or months.
Thanks, again for the contribution