Fix GH-98

[haszi]

Store IDs of non-chunked elements.
Closes #98.

[Girgias]

LGTM and thank you!

[Girgias]

Well the tests seem to fail 🤔

[haszi]

Well the tests seem to fail 🤔

Yeah, for some reason it doesn't index anything on GH but works perfectly fine locally. I'm trying to figure out what's going on but don't really have a clue what it could be yet.

[haszi]

It turns out that 'index' => true in Config doesn't do anything (changed it to 'force_index' => true) and the $indexes property of Format is actually the list of indexes read from cache/sqlite and Index's $nfo property holds the parsed indexes.

Anyway, the test passes now and this is ready for review.

[haszi]

I've changed the private $nfo property to protected so I can access it from TestIndex but now I'm thinking that adding a getNfo() method to Index may be a better solution.