Fix unix format for short_if.go.

• (BC) Typesafe Min*, Max* previously returned a nil pointer when the argument does not contain any items, it has been changed to have a typesafe signature and it panics
• Add StringerJoin which joins an array of elements which implement the String() string function (thks @arnovanliere)
• Update Get to allows zero values with the option WithAllowZero (thks @roneli)
• Add typesafe bool functions FilterBool, ContainsBool, InBools, IndexOfBool, LastIndexOfBool, UniqBool, DropBool, ShuffleBool, ReverseBools (thks @arnovanliere)
• Update Zip to panic when the passing argument is not a slice / array

• Reduce now returns an interface
• Add FlapMap which manipulates an iteratee (map, slice) and transforms it to to a flattened collection of another type
• Add support for map when using Get
• Add Set which sets value at a path of a struct
• Add DifferenceInt64, DifferenceInt32, DifferenceInt, DifferenceUInt, DifferenceUInt32, DifferenceUInt64
• Add Flatten which flattens a two-dimensional array.
• Add Prune which returns a copy of "in" that only contains fields in "paths"

Thank you @youyuanwu @vellotis @guyarb @nohponex @CengSin @samber @HarryWang29

• Add Join which combines two collections using the given join method (thks @xunleii)
• Add Without which creates an array excluding all given values (thks @xunleii)
• Add Subset which returns true if a collection is a subset of another (thks @reetuparna)
• Add Join operations, primitives (InnerJoin, OuterJoin, LeftJoin, RightJoin) and typesafe implementations (thks @xunleii)
• Fixed input mutation in Uniq, it returns a copy of the input without the duplicate
• Fixed some typos (thks @anukul)
• Fixed SubtractString when an empty array is passed (thks @alongat)

• Add Intersect returns the intersection between two collections (thks @samber)
• Add Difference returns the difference between two collections (thks @samber)
• Add GetOrElse retrieves the value of the point or default (thks @samber)
• Add Subtract the subtraction between two collections. It preserves order (thks @airani)
• Fix bug in lastIndexOf (thks @kkty)

• Add Max* methods (thks @abshek)
• Add Min* methods (thks @CatInCosmicSpace)
• Fix typos (thks @flowonyx)
• Handle zero value in Chunk
• Add FindKey to iterate over elements of collection, returning the first
• Add Some to return true if at least one element is present in an iteratee

• Add Intersect , IntersectString (thks @novln)
• Add chain builders to chain method calls (thks @xunleii)

• More Go versions have been added to the CI (thks @ferhatelmas, @HaraldNordgren)
• Add Compact (thks @poporul)
• Add Reduce which reduces an iterable based on a function (thks @poporul)
• Add Zip which zip two iterables (thks @HaraldNordgren)
• Add Fill which fills an iterable with a value (thks @HaraldNordgren)
• Add Every which returns true if every element is present in a iteratee (thks @HaraldNordgren)
• Add Any which returns true if any element of the iterable is not empty. If the iterable is empty, return False.
• Add All which returns true if all elements of the iterable are not empty (or if the iterable is empty)
• Add ConvertSlice which converts a slice to a desired type
• Add Drop which creates an array/slice with n elements dropped from the beginning (thks @spoonscen)
• Missing documentation for Compact and Reduce (thks @alexander-yu)
• Reduce memory usage for Uniq functions (thks @orvice)