Since this was moved to a subdirectory, suddenly doxygen didn't work
anymore as it should've.
# directories like "/usr/src/myproject". Separate the files or directories
# with spaces.
# directories like "/usr/src/myproject". Separate the files or directories
# with spaces.
# If the value of the INPUT tag contains directories, you can use the
# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
# If the value of the INPUT tag contains directories, you can use the
# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp