Merge pull request #44 from common-workflow-language/revert-optional-required

Revert "make explicit optional and required fields"

Author: mr-c

schema_salad/makedoc.py

@@ -357,7 +357,7 @@ def extendsfrom(item, ex):
                     "<td>%s</td>" % (
                         rfrg, self.typefmt(tp, self.redirects,
                                            jsonldPredicate=i.get("jsonldPredicate")),
-                        "Optional" if opt else "Required",
+                        opt,
                         mistune.markdown(desc))
                 if opt:
                     required.append(tr)