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.
* Merge branch 'master' of C:\Projects\PHPOffice\PHPSpreadsheet\develop with conflicts.
* More trend function unit tests
* Yet more trend function unit tests
* Merge branch 'master' of C:\Projects\PHPOffice\PHPSpreadsheet\develop with conflicts.
* More statistical tests
* Further statistical tests
* Unit tests for some of the trend functions
* resolve scrutiniser objections
* Fix order of @return types :-(