- Always called utilities. We need to make sure they work
as expected. Introduce PHPUnit tests.
- Due to the use of gobals inside the static methods they
become untestable. Remove use of global but that also
forces a change if method signature.

- Always run and should be fast.
- Introduce tests to make sure I actually work.
- Stop method from using global states to make it testable and safe.

Since there is no code style lets use PSR-12
https://www.php-fig.org/psr/psr-12/

- PSR4 autoload all classes except modules.
- Explicit declare what is used by classes.
- Composer define what PHP modules are used.

- Remove included ARC2 lib.
- Replace static included library from /vendor. No
autoloading, yet.

Loads of fixes. Redesign based around bibo:Document. Added search on person, topic and collection. Timeline on collection started, but broken.

tested briefly in types

- If Query is a CONSTRUCT and client requests RDF/XML, TTL, NT, JSON -> works as usual
- if query is a CONSTRUCT and client requests HTML
-- Results hang from 'rdf', similar to 'models'

```
{%for s in rdf.subjects%}
  <li>{{s.value}}</li>
{%endfor%}
```

Returns all the subjects. `{{s.value}}`, `{{s.curie}}`, etc.  work the same way as in models

```
{%for p in rdf.ex__alvaro%}
  {{p.value}}
{%endfor%}

```

Returns all the predicates from `ex:alvaro` (the colon is translated to `__`). Assuming the namespace for `ex` is `http://example.org/`, this means all the rpedicates from `http://example.org/alvaro`.

```
{%for o in rdf.ex__alvaro.rdfs__label%}
  {{o.value}}
{%endfor%}

```

returns all the objects from triples <http://example.org/alvaro> rdfs:label ?o

TODO:

- Blank nodes is unclear that are working now
- Language, datatypes, etc. non-existant
- Discussion: Combine all the models into one graph? or name them similar to 'models'? Currently adding more queries crashes
- Probably a bunch of bugs

GUI implemented

TODO: GUI needs work

Fixes #114

Avoid doing a 500 if query can't be converted to a CONSTRUCT (for exampe, when using aggregation functions)