Make allheaders unit test also enable -Wall, -Wextra and -Wpedantic for
clang to detect any warnings it might give in wx headers.
Don't use -Weverything because there are just too many warnings we'd
need to disable then.
This directory contains tests for the library and is mostly useful for the
library developers. See the samples subdirectory for the examples that are
more useful to the application developers using the library.
If you do work on the library itself and would like to modify an existing or
add a new test, please see docs/contributing/how-to-write-unit-tests.md for
more information.
This file also contains the instructions for running the tests if you'd just
like to do it to confirm that the library works correctly.