Make Hadley the maintainer

cc @hadley

Author: jimhester

DESCRIPTION

@@ -4,12 +4,11 @@ Version: 1.3.2.9001
 Authors@R: 
     c(person(given = "Hadley",
              family = "Wickham",
-             role = "aut",
+             role = c("aut", "cre"),
              email = "hadley@rstudio.com"),
       person(given = "Jim",
              family = "Hester",
-             role = c("aut", "cre"),
-             email = "jim.hester@rstudio.com"),
+             role = "aut"),
       person(given = "Jeroen",
              family = "Ooms",
              role = "aut"),

NEWS.md

@@ -1,5 +1,7 @@
 # xml2 (development version)
 
+* Hadley Wickham is now (again) the maintainer.
+
 * xml2 has been re-licensed as MIT (#317).
 
 * `xml_find_all.xml_nodeset()` gains a `flatten` argument to control whether to return a single nodeset or a list of nodesets (#311, @jakejh)