Update the Makefile to reflect Changes->NEWS
doc: Some user whatsit related documentation fixes.
Now all luatexbase modules are identified through provides_module()
Merge pull request #11 from eroux/master

Closing issue #10
Merge pull request #12 from sh2d/master

Some user whatsit related documentation fixes.
Merge branch 'master' into whatever
add function to retrieve attribute unset value