Rename current project to Model
Create View module
Create ViewModel module
Bind View and ViewModel
Merge pull request #68 from kapralos/lab02-mvvm-tree

[KK] Evgeniy Kapralov - Lab 2 MVVM Tree
Removed ClickHandler class, set of code cleanings
Adding more smart GUI logic
Added format checker
Finished button disabling logic
Minor fix
List of operations is now loaded from ViewModel
Fixed JComboBox warning
Enabled a couple of Xlint checks
Added treating warnings as erros (commented at the moment)
Merge pull request #72 from kirill-kornyakov/xlint-checks

Xlint checks
Moved TODO list to the README file
Minor update to README
Now ComboBox keeps Operation
Now do Calculate on Enter
Cleaned GUI code a little bit