talkatu/talkatu

A bunch of random cleanups/fixes for TalkatuView and TalkatuInput
gtk4
2022-02-02, Gary Kramlich
68f23f6ebc61
A bunch of random cleanups/fixes for TalkatuView and TalkatuInput

This still doesn't fix the input, but it fixes a number of other issues.

Testing Done:
Ran the demo

* verified the extra menu of `TalkatuInput` worked
* manually verified that the event controller callbacks were called
* manually verified that the notify callbacks were called.

Reviewed at https://reviews.imfreedom.org/r/1279/
# Talkatu
![logo](logo.png)
[ ![Issues](https://img.shields.io/badge/Issues-YouTrack-ee3b8b.svg) ](https://issues.imfreedom.org/issues/TALKATU)
Talkatu is a collection of Gtk+ widgets that are useful for chat applications.
It was started as a rewrite of the GtkIMHTML widget found in Pidgin, but
quickly expanded to include most things related to conversation windows.
This is highly experimental right now and might eat babies, we're not sure
yet. So proceed with caution :-D
## Name
The name is a pun of talkatoo from Super Mario Odyssey which just so happens
to also say "talk at u" :-D
## Dependencies
Currently Talkatu depends on
* glib-2.0 >= 2.40.0
* gtk+-3.0 >= 3.10.0
* gladeui-2.0 >= 3.0.0
* gspell-1 >= 1.2
* gumbo >= 0.10
* libcmark
## Internationalization
All of our internationalization work is done via the
[Talkatu](https://www.transifex.com/pidgin/talkatu/dashboard/) project under
the [Pidgin organization](https://www.transifex.com/pidgin/) on
[Transifex](https://www.transifex.com). If you would like to contribute
that's the place to do it.