The extra target doesn't `#define` any of `WIN32_LEAN_AND_MEAN`,
`NOMINMAX`. The default `mio::mio` adds both of these. This commit also
removes these defines from the `.*pp` files; they're now inserted by the
compile commands.
For an earlier PR (#16), I introduced a new test file for testing
unicode support on Windows. The project's `.gitignore` file excludes the
entire test directory, so it was missed out. Turns out that this test
file wasn't actually needed, but the CMake config still uses it. This
commit just changes this back to the original `test.cpp` file.
`CreateFile` is `#define`d as `CreateFileW` in unicode builds (when `/D
UNICODE` is defined). This is probably more likely to be a issue when
integrating into GUI projects.
This commit allows compilation to succeed when `UNICODE` has been
defined and adds a note to the README, explicitly stating that mio
doesn't support wide char string types as parameters.
