v1.9.0

[vran-dev]

1. feature：I18N, support zh_cn, en now
2. feature：add context menu in node tree
3. feature：support node multiple select
4. feature：add context menu in server list
5. feature：request focused when jump to server create pane
6. feature：request focused when jump to node create pane

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This discussion was created from the release v1.9.0.

[vran-dev]

Known issue

descrption: can't relaunch application after change config -> lang to others
solution 1:
delete {user.home}/.prettyzoo/prettyZoo.cfg and relaunch application, don't change language again

solution 2:
upgrade version to v1.9.1