Use nquads instead of trix
First version of the planner

This is just an experiment. It works quite well. Variants and
.htaccess generation are missing. The planner expects an n3 document
as input and writes a shell script to standard output.

In order to create the input, I use W3C's cwm with a plethora of
rules. This will allow me to reduce SemPipe's codebase drastically.
Documentation, examples and tests will be written later on.