Rated 4 out of 5 stars
Tried this add-on and it works very well. The possibility to manage your own 'accents' is quite clever. Not 5 stars because it is under development still
Rated 5 out of 5 stars
It takes a little patience to set it up for the characters you anticipate using, but once done, it's super. Simplest way yet to enter those unusual characters. I avoided the default setup, as it gave more options than I use, so I took the sample German configuration and added a couple from French configuration. Again, a touch of patience, but it really pays off. SUPER!