update version to 1.6.0

update version to 1.5.9 and close knownsec#95

update version to 1.5.8

取消pyreadline的报错提示

update version to 1.5.6

update version to 1.5.5

update version to 1.5.4

update contributors.md

update version to 1.5.1

update version to 1.5.0