Simple db connection implemented.
Made application configurable.
Made tests more flexible.
Done server easy to test (BastTest AsyncBaseTest abstracted) and test easy to execute (suit or single).
Simple fake user-token model implemented.
Test name convention changed: tests -> test.
Scaffold for User and Token model tests added.
Test module changeg name on app_test(name conflict issue).
Test for fake user and token models implemented.
New configuration paramter - db_echo added
user - token relation model improved (token.user.id not null constructor constraint removed).
ChatMessage model implemented and tested.
delvered and read fields added to Message model.
sender_id abstracted to Message model.
Association between Conferneces adn Users implemenetd and tested.
ConferenceMessage implemented and tested.
ReadableMessage model introduced to allow registry delivered and read events in conference message brodcasting process.
MessageMetadata model introduced.
Introduced polimorphic nature of message.
Made MessageMetada generic.
All models implemented.
Dealing with sqlite session.
Test try finally blocks added.
Conference test designed.
Conference messages broadcasting tested.
Requirements updated.