Thank you very much to the friends who gave me suggestions last time. compared with last 'Show HN', i made the big effort to make the world better, features 1

Thank you very much to the friends who gave me suggestions last time. compared with last 'Show HN', i made the big effort to make the world better, features 1. removed the unnecessary animation 2. migrating UI library to Jfoenix (an open source material design style library ) 3. redesign node operation (instead of context menu) 4. redesign server operation (add context menu) 5. add connection indicator 6. support auto reconnect when disconnected accidentally 7. support i18n 8. upgrade JRE version from 14 to 16 you can download and try it from github release page. best regards