Added informal tests
Merge branch 'test' of https://github.com/zippeellii/Krogkollen into test
Updated IBackend interface
Added an extension for IBackend, IParseBackend which is a more concrete interface
Merge branch 'dev' into test
Updated IParseBackend. Now possible to check when a pub latest was updated
Moved test files
Merge branch 'backend' into test
Prepared for testing