Use gspell instead of GtkSpell
@swilmet
Submitted by Sébastien Wilmet Link to original bug (#795830)
Description
This is a low-hanging fruit to have better spell-checking.
I've developed the gspell library: https://wiki.gnome.org/Projects/gspell
It supports GtkEntry in addition to GtkTextView, but I don't know if gitg needs spell-checking for GtkEntry.
See the FAQ to know the differences between gspell and GtkSpell: https://wiki.gnome.org/Projects/gspell/FAQ
Version: git master