do nothing at construction time for attributes with undef init_arg - fixes undefined...
-rw-r--r-- .gitignore
-rw-r--r-- Changes
-rw-r--r-- MANIFEST.SKIP
-rw-r--r-- dist.ini
-rw-r--r-- ignore.txt
drwxr-xr-x lib
drwxr-xr-x t