While we might never be able to have 100% of our code strict, we can at
the very least do it for all of our tests. This ensures that our tests
are using our API with the types as intended by the test author, and not
silently be cast to what our API requires.
Added two unit tests for issue #3337: one that includes the xlfn prefix, and one that does not. These tests will ensure that the prefix is being added, when appropriate, within an array formula.
Adrien Crivelli
MarkBaker
fjohnston@avatarasoftware.com