Sparkline
An Atom package to generate Sparklines from comma-separated lines of numbers.

Usage
Select a comma-separated line(s) of numbers (or leave the selection blank to use the whole file). Then, either type in sparkline in the Command Palette, press Control-Shift-S, or go to the Edit menu, choose Text, then choose Convert to Sparkline.
Credits
range-finder.coffeeis via https://github.com/atom/sort-lines/blob/master/lib/range-finder.coffee- Sparkline algorithm based off of spark.