All obligatory assignment deadlines postponed 1 week

Unfortunately, there will be no group session on February 5, due to all teachers leaving for the NLPL winter school.

Because of that, the Obligatory 1 submission deadline is postponed to February 15.

On February 12, there will be a regular group session specifically devoted to obligatory 1.

Correspondingly, all the subsequent assignments are shifted a week forward (see the table).