magit-hub-pr.el (magit-hub-pr-run-hub-async-with-input*): add
magit-hub-pr.el: read with default
magit-hub-pr.el (magit-hub-pr-parse-url): bug fix
clean up
(hub-pr-log-edit): 引数無しに変更
(hub-pr-request-issue): 引数無しに変更