Progress: continuing development, more http header support, implemented error reporting

Progress: continuing development, more http header support, implemented error reporting

I noticed that there are a lot of incomplete functions in the http class.
This, in particular, implements cookie support.
There is still a lot more incomplete code in the http class.

My initial error reporting work is done.
Expect major refactoring as I continue developing.

After some testing, I have foind the php-xz module to be lacking and defunct.
I also noticed that there are multiple relevant repositories to choose from (added both to documentation).

Numerous other changes.