(feat) added controlling of checking updates

update: true
updateError: true
** Remember to change your config or you will never see checking updates in the console. Please read README.md **

v0.1.0's ps
PS: 2021-2-15 update jar file to fix 1.8-1.11 compatibility (1.7 not tested)
PS: 2021-5-28 update jar file to fix NPE error when disabled

v0.1.1
(fix) ws alive error