simplify repl completion support, only use the jedi one, because the builtin completion (rlcompleter) is not context sensitive and makes the whole thing really complicated.
only use repl keyword for now in __main__.py.
fix a typo
Merge branch 'dev' into repl
Merge branch 'dev' into repl
Merge pull request #280 from davidhalter/repl

Repl completion changes