Fixed again
Corrected the calculator. Added shell.
Допилил копирование Shell, Ивановский 295
Добавила обработку случаев переполнения integer и деления на 0.
Added new class "Location" than contains absolute path to current directory and allows user to change or get it.
первая сдача
not working cp; mv; package mode
Fixed some little bugs.
New commit
Fixed passing arguments to commands.
Calculator, fixed version 2
working version 1
Add package
Calculator
	-bug fix
Update Shell
Delete BatchMode.java
Delete CopyFunctions.java
Delete DeleteFunctions.java
Delete InteractiveMode.java
Delete StringHandler.java