refactor some stuffs
Refactor out circuit to encapsulate historical traces
WIP
Refactoring refactoring refactoring
Merge branch 'master' into temporal_overview
Temporal overview framework
Temporal overviews work. Ain't pretty, though
Circuit history graph works!
Add ValueDictView
Temporal overviews working, more or less
Merge pull request #10 from ducky64/temporal_overview

Temporal Overview
The UI is definitely non-DRY (between Chisualizer main frame and temporal overviews), but that's a refactor job for another day.