Added GuildVoiceUpdateEvent to combine leave and move

[MinnDevelopment]

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Pull Request

Allows to do:

public class MyListener extends ListenerAdapter {
    @Override
    public void onGuildVoiceUpdate(GuildVoiceUpdateEvent event) {
        // do stuff when user leaves channel
    }
}

instead of:

public class MyListener extends ListenerAdapter {
    @Override
    public void onGuildVoiceLeave(GuildVoiceLeaveEvent event) {
        onGuildVoiceUpdate(event.getChannelLeft());
    }
    @Override
    public void onGuildVoiceMove(GuildVoiceMoveEvent event) {
        onGuildVoiceUpdate(event.getChannelLeft());
    }

    public void onGuildVoiceUpdate(VoiceChannel oldChannel) {
        // do stuff when user leaves channel
    }
}

[DV8FromTheWorld]

LGTM

[DV8FromTheWorld]

What does this actually change? Why'd you set it?

[MinnDevelopment]

On linux git wants to replace the crlf with lf on all files so I had to set it, this also prevents git from sending .java/.gradle files with other line endings. the * text=auto is the default for git to choose the best line ending it sees fit if no other rule overweights it