Added basic shell of GUI.
Build runs the gui and doesn't allow resizing
Added listeners and basic operation of them.
Stub created in shift cipher for decryption
Stub created in affine cipher for decryption
Tests for cipher and affine cleaned up
Got buttons/encryption functionality working. Mode button works but decryption not currently enabled/available.@
Merge branch 'master' of github.com:Callum-Steele/cs56-utilities-cryptography
Added labels to input text fields.
Added stubs for decryption in GUI and check whether in encryption or decryption mode.
Tests added for shift decryption:
Shift cipher decryption passes all tests
Merge branch 'master' of github.com:Callum-Steele/cs56-utilities-cryptography
Added decryption for Vigenere's.
Added Shift decryption to GUI and tests to VigenereCipher for decryption.
Added comments to CryptographyGUI.java
Added math utilities class, tests for that class and written tests for affine cipher decrypt
Merge branch 'master' of github.com:Callum-Steele/cs56-utilities-cryptography
Added exception handling in CryptographyGUI.java along with alert box when incorrect input entered in text fields.
Updated README with instructions for format of input to GUI.