File entropy view

[PROPHESSOR]

It would be useful to have entropy diagram of a file. It should work as the Histogram view works now. If nothing is selected, the full file entropy is shown, if there's some selection, the entropy for this fragment should be shown.

Also, it's useful when you can navigate through the file while moving the mouse through the entropy diagram with left button pressed (as it works in Hopper Disassembler, for example).