Simple function tests performance of regular and optimized trends
updated the telescoping trends function to compute short-stats just once for the entire timeseries. tests pass
Removed extra functions, fixed formatting of output of telescoping-trends
Tweaked calculate-trends test to reflect optimized short trend calcs; fixed formatting
Fixed merge conflict
Added tests for short-stat and short-stat-all
Merge pull request #358 from reddmetrics/feature/trends-performance

Feature/trends performance