Fcitx 5.0.9

[Weng Xuetian]

Hi all,
It has been a while since the last release. This batch of releases are
still targeting bugfixing and small features. We are working on
updating the simplified Chinese language model with some more modern
data, so be sure to stay tuned!

Some highlights of updates:
fcitx5-configtool:
1. Fix not working subconfig saving
2. try to workaround the UI is not fully displayed by kcmshell

fcitx5-libthai
Fix the keycode computation

fcitx5-chinese-addons:
Allow so-called "single line mode" to fix the cursor position

libime
Allow pinyinjiajia shuangpin to use xiao'he style leading.

fcitx5-gtk
Fix UI drawing when vertical UI is used.

fcitx5-qt
Fix hotkey like shift+space is not accepted by keysequence widget.

Thanks,
Xuetian