[wiki] [sites] Add last talk for slcon 2019 || Laslo Hunhold

[git]

commit 2356a5cef7c60dc6a72b100469f99d901b4d43df
Author: Laslo Hunhold <d...@frign.de>
Date:   Mon Jan 27 15:09:01 2020 +0100

    Add last talk for slcon 2019
    
    Signed-off-by: Laslo Hunhold <d...@frign.de>

diff --git a/suckless.org/conferences/2019/index.md 
b/suckless.org/conferences/2019/index.md
index efafca41..adf5502f 100644
--- a/suckless.org/conferences/2019/index.md
+++ b/suckless.org/conferences/2019/index.md
@@ -110,6 +110,10 @@ Video:
 > regard to suckless Unicode handling in C at the level of grapheme
 > clusters.
 
+Video:
+
+[![slcon-2019-05-laslo_hunhold-reflections_on_unicode.webm](//dl.suckless.org/slcon/2019/slcon-2019-05-laslo_hunhold-reflections_on_unicode.png)](//dl.suckless.org/slcon/2019/slcon-2019-05-laslo_hunhold-reflections_on_unicode.webm)
+
 ### (12:00-13:00) Lunch
 
 ### (13:00-16:00) Hacking and departure