Call for testing: libreoffice 5.4.2

[issue]
the snap doesn’t allow to change input method to a Japanese one.
I’m using fcitx and mozc. My usual shortcut for toggling the japanese input doesn’t work

[feature request]
Please add Polish language spellchecking

[feature request]
Please add Japanese language spellchecking

[feature request]
Please enable the connection to removable-media by default without user intervention