added nubBy
added overloaded sort, maximum, and minimum
added group
added inits and tails
added elem, notElem, and lookup
added elemIndex
added elemIndices and findIndices
added lines and words
added deltas
added increasing/decreasing etc.
added readRoundingMode
added unique
added two-arg range demos
added docs for sum and product
added delta docs
change ascending and descending to increasing and decreasing
finished fixing tuple docs and adding tuple read
Merge branch 'develop'