Directives
Import source files
#load brings another source file into the compilation. The path is relative
to the file the directive appears in.
#load "helpers.mew"
#load "stuff/utility.mew"
A path can name several files at once with * or ?. Matches are sorted, so
the same sources always compile in the same order.
#load "stuff/*.mew"
A path that matches nothing is an error.