Unlike installing python 3.5 on Ubuntu 14.04. Trying to install Python 3.6 on Ubuntu 16.04 is not an easy mission.
After I upgraded my firefox to version 55, I found that old option:
no longer existed, So without that option I can not display emoji in firefox correctly.
Install terminator in fedora is quite easy but there need some works to make it default with shortcut key like Ubuntu.
sudo dnf install terminator
change default Gnome-shell console to terminator
gsettings set org.gnome.desktop.default-applications.terminal exec /usr/bin/terminator
reboot your PC and set a custom shortcut for it.