UI2.0

Feature Requirements
--------------------

Create a new cipher
    contents from file
    user types in to UI
Save the state of an editting session to file
    key
    ciphertext
    plaintext
    keyword
    period
Load a previously saved state from file
Change the type of a cipher


Print the contents of an editting session
    should be possible to continue work by hand on paper

Perform statistical analyses on ciphertext
    kasiski
    sdev/ioc
	As a function of period
    histogram
	character
	digram
    character count
    contact chart

*No Solve Functionality*

Pluggable UI for manipulating ciphers
    provide a workarea for performing manipulations
    provide a frame for typing in commands/inputs
    provide a display for showing the key
    provide a buttonbar for common commands
    modify the ciphertext for an existing cipher (fix typos)
Allow multiple ciphers to be open for manipulating


File -> New
    Opens a new cipher in a new tab
File -> Open
    Loads a saved cipher in a new tab and sets the name of the current
    savefile
File -> Save
    Saves the current cipher to the current savefile
File -> Save As
    Saves the current cipher to a file specified by the user and sets
    the name of the current savefile.
File -> Close
    Closes the current tab.
File -> Exit
    Exits the application

Commands -> (cipher specific)
    Locate Tip
    Set Period
    Clear