fix centering of textContainer element

remove fullWidth from textcontainer div

Fix content centering in main element

update changelog

remove unnecessary preload

prep v1.1.3

Add robots.txt to disallow crawlers from indexing slides and keybase.txt

Update Caddyfile settings

Update temingo version to 2.1.4 and revise CHANGELOG for clarity and …

…formatting improvements.

update umami id