* Switch to the new Google Analytics 4 tracking property instead of
  the old one from Universal Analytics.

JSON-LD can contain `sameAs`, which can be used as a list of URLs
pointing to my other profiles.
When I added JSON-LD first, I just gave a bunch of profiles in there.

Instead of having an arbitrary subset there, simply list all profiles
from the /profiles page.

Drastically simplify the code by using the templating engine to both
filter and render profiles using $for$ and $if$.

Not only the code is more straightforward now, we also get access to
full profiles list and full data about it (including importance) in the
template engine. So, for example, now we can render both lists in
index.html (this change is coming next).

Make README more standard, add build instructions, use new licenses.

Clean up a bit by reordering and adding comments.

Add a manual step for deployment to the production environment on master.

Set target environment for the pages deployment.
Also, use a simple alpine image by default.

Instead of having specialised profilesCompiler, provide a compile that
will work on an arbitrary Yaml file and use it for profiles.

When compiling the profiles list, instead of reading the body of the
file as String and then converting to ByteString, just directly read the
entire file as ByteString.

Instead of compiling two different versions of lists of profiles,
compile it once into a Haskell value (list of profiles) and then filter
when rendering.

* Bump LTS
* Bump Hakyll
* Fix newly occured warnings
* Bump CI docker image