Added gitlab ci support

See merge request !5

Merge branch '2-rote-einfarbung-der-id-von-funktionalen-anforderungen-kriterien-und-ahnlichem' into 'master'

Resolve "Rote Einfärbung der ID Von Funktionalen Anforderungen, Kriterien und ähnlichem"

Closes #2

See merge request !4

Update README.md

See merge request !3

Fix incorrect hyperlinking according to #1

Closes #1

See merge request !1

Fixed spacing with hyperlinks

See merge request !2

cleverref must be after amsmath

Fixes a bug with missing links.

Enables changing them without changing the sty file.

See https://github.com/michal-h21/rdfref/issues/1

High-level criteria are 'fulfilled' by low-level functionality.
Functionalities are 'tested' by tests.