Change directory for Model
Created Model Project
delete core
add View ViewModel Model
Implemented view
Lab2-mvvm-done
Edit global settings
added View project
rename form
Added ViewModel with tests
View was connected with ViewModel
Merge pull request #91 from alexlyulkov/lab2-mvvm-interpolation-search

Люльков - Лабораторная работа #2
Merge pull request #90 from surmin/lab2-mvvm-determinant

Lab2 mvvm determinant completed
Merge pull request #88 from ElenaTilkova/lab2-mvvm

Tilkova Elens: Lab2 mvvm
Merge pull request #92 from kirill-kornyakov/preps-for-lab5

Preps for lab3
Started to implement logging functionality
Added TxtLogger with infrastructure tests
Added operation change event to log, hiding ViewModel members
Logging updated input from user
Log is not updated when input is the same