\itembreak, \itemjoin:  Remove obsolete macros.
\itembreak,
\itemjoin:  Remove obsolete macros.

\itemnewline:  Rename to \py@itemnewline, since it's only used internally.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator