v0.1.0

• fixed bug in DOM default property handler (wrong call #toString on passed values)
• fixed bug in #toArray() and #window() (use […acc, x] instead of [].concat to accumulate results)
• renamed #combine() to #combineWith() for consistency
• #combine() now yields an array of results ( [Stream a] -> Stream [a])
• added method #zipWith() (refactor #zip() to use #zipWith())
• added method Stream.zip(…args)
• added method #reduceRight()