Async implementation

[Smoren]

New functionality:

• multi
  • chainAsync()
  • zipAsync()
  • zipFilledAsync()
  • zipLongestAsync()
  • zipEqualAsync()
• single
  • chunkwiseAsync()
  • chunkwiseOverlapAsync()
  • compressAsync()
  • dropWhileAsync()
  • enumerateAsync()
  • filterAsync()
  • flatMapAsync()
  • flattenAsync()
  • groupByAsync()
  • keysAsync()
  • limitAsync()
  • mapAsync()
  • pairwiseAsync()
  • repeatAsync()
  • sliceAsync()
  • skipAsync()
  • takeWhileAsync()
  • valuesAsync()
• set
  • distinctAsync()
  • intersectionAsync()
  • partialIntersectionAsync()
  • symmetricDifferenceAsync()
  • unionAsync()
• reduce
  • toValueAsync()
  • toAverageAsync()
  • toCountAsync()
  • toFirstAsync()
  • toFirstAndLastAsync()
  • toLastAsync()
  • toMaxAsync()
  • toMinAsync()
  • toMinMaxAsync()
  • toProductAsync()
  • toSumAsync()
• summary
  • isAsyncIterable()
  • allMatchAsync()
  • allUniqueAsync()
  • anyMatchAsync()
  • isEmptyAsync()
  • isReversedAsync()
  • isSortedAsync()
  • noneMatchAsync()
  • sameAsync()
  • sameCountAsync()
• transform
  • toArrayAsync()
  • toAsyncIterable()
  • toAsyncIterator()
  • toMapAsync()
  • toSetAsync()
• math
  • runningTotalAsync()
• AsyncStream
  • of
  • ofEmpty
  • zipWith
  • zipFilledWith
  • zipLongestWith
  • zipEqualWith
  • chainWith
  • chunkwiseOverlap
  • chunkwise
  • compress
  • dropWhile
  • filter
  • enumerate
  • keys
  • limit
  • map
  • flatMap
  • flatten
  • groupBy
  • pairwise
  • runningTotal
  • skip
  • slice
  • takeWhile
  • values
  • distinct
  • intersectionWith
  • partialIntersectionWith
  • symmetricDifferenceWith
  • unionWith
  • toValue
  • toAverage
  • toCount
  • toMax
  • toMin
  • toMinMax
  • toFirst
  • toFirstAndLast
  • toLast
  • toSum
  • toProduct
  • allMatch
  • allUnique
  • anyMatch
  • isSorted
  • isReversed
  • noneMatch
  • sameWith
  • sameCountWith
  • toArray
  • toMap
  • toSet

[coveralls]

Pull Request Test Coverage Report for Build 4584186980

• 515 of 515 (100.0%) changed or added relevant lines in 11 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 4567059849:	0.0%
Covered Lines:	1067
Relevant Lines:	1067

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💛 - Coveralls