[FIX] building documentation with P3

* fix P3 incompatibilities in doc/_extensions
* vendor pyjsdoc, strip out everything we're not using and make what's
  left P3-compatible (upstream is not P3 compliant)
* drop undeclared dependency on attrs as it turns out not to be much
  used

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/_extensions/autojsdoc/parser/jsdoc.py b/doc/_extensions/autojsdoc/parser/jsdoc.py
index 00406df42c1..a34a2aa9b83 100644
--- a/doc/_extensions/autojsdoc/parser/jsdoc.py
+++ b/doc/_extensions/autojsdoc/parser/jsdoc.py
@@ -174,7 +174,7 @@ class NSDoc(CommentDoc):
                     for p in self.get_as_list('property')
                 )
             ]
-        return self.members.items() or self['_members'] or []
+        return list(self.members.items()) or self['_members'] or []
 
     def has_property(self, name):
         return self.get_property(name) is not None