Encrypt'n'Decrypt v0.2.0 (Build 11)

[Yilmaz4]

This release adds ability to save the encryption key to a file and improves visuality. All changes listed below:

General Changes:
● Added ability to save the encryption key to a file
● Added exit option to all menus
● Added more error codes and changes some errors's texts

Visual Changes:
● Improved UI (User Interface)
● Added detailed program version to main menu
● Added title to terminal (console) window

Bug & Error Fixes:
-No bugs fixes-

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This discussion was created from the release Encrypt'n'Decrypt v0.2.0 (Build 11).