deque: initial commit for ILogger
deque: implement text logger
deque: log with date
deque: add logger in viewmodel
deque: add logger in view
deque: make gradle happy
deque: try to make travis happy
deque: travis was not happy again
deque: rename canSetInitialValue method
Merge pull request #162 from VVillwin/lab3-logger-deque

Вильчинский - Лабораторная работа #3