custom tag uses old taglib DTD
when updating project to Java/Jakarta EE 8 noticed that there are two files left from original code(?) that were very old, corejsf-facelets-tags.xml and corejsf.taglib.xml.
Only corejsf.taglib.xml seems to be used (ref in web.xml). it refers to facelet-taglib_1_0.dtd.
Even though I do not cover custom facelets tags (preferring composite components) this should be updated.