Cleaning up continuity.py a bit: - "tuple" is reserved - Calculate total_sum as the sum of the last 50 items via slice notation - None is singleton.  Compare via identity, not equality
Cleaning up continuity.py a bit:
- "tuple" is reserved
- Calculate total_sum as the sum of the last 50 items via slice notation
- None is singleton.  Compare via identity, not equality

CDKGlobal/skyline,CDKGlobal/skyline,klynch/skyline,etsy/skyline,aelialper/skyline,CDKGlobal/skyline,hcxiong/skyline,triplekill/skyline,sdgdsffdsfff/skyline,sdgdsffdsfff/skyline,loggly/skyline,CDKGlobal/skyline,pombredanne/skyline,klynch/skyline,hcxiong/skyline,MyNameIsMeerkat/skyline,MyNameIsMeerkat/skyline,aelialper/skyline,loggly/skyline,triplekill/skyline,100star/skyline,pombredanne/skyline,aelialper/skyline,triplekill/skyline,loggly/skyline,pombredanne/skyline,PaytmLabs/skyline,aelialper/skyline,hcxiong/skyline,PaytmLabs/skyline,100star/skyline,etsy/skyline,loggly/skyline,pombredanne/skyline,etsy/skyline,etsy/skyline,PaytmLabs/skyline,PaytmLabs/skyline,triplekill/skyline,hcxiong/skyline,klynch/skyline,sdgdsffdsfff/skyline,sdgdsffdsfff/skyline