Formatted code to pep8, moved imports outside of function.
When the mouse is not hovered over a wedge, the text is cleared.
Revamped color.

Color is now a function of a wedge's angle and depth.
Color changes directly with the angle, and a color's alpha changes with
the depth.
Added a popup window that displays process info when clicking a wedge.

I had to restructure much of the program in order to access a process's
information from the wedge. Now, dicts of the processes are used instead
of storing just the CPU/RAM percent values.
Merge branch 'master' of https://github.com/Spferical/visram

Conflicts:
	app.py
	chart.py