Version 2.2.0

Release summary:

Applied fixes and improvements to the API, added multiple utility methods to
the Iterator API and several utility functions, added table of contents to the
documentation.

Changelog:

Added

• A way to limit the internal buffer size of MemoryWritable stream.
• common.mkdirpPromise() function.
• Iterator#apply() and Iterator#chainApply() to improve iterator
  interaction with chained calls.
• captureMaxStack() utility to get maximum available stack trace.
• Table of contents to documentation.
• Get random element from array: sample(array).
• ECMAScript Modules named exports support.
• Iterator#min(), Iterator#max(), and Iterator#findCompare() to
  simplify consumption of iterator in common use-cases
  (finding minimum, maximum, or using a custom condition appropriately).
• Iterator#partition() to allow splitting iterator values into
  multiple arrays.
• Iterator.zip() - static method for zipping iterators.
• Iterator#groupBy() to group iterator value into Map by
  specific keys.

Changed

• cryptoPrefetcher() to throw when bufSize is not a multiple of
  valueSize.
• MemoryWritable internal buffer size is now limited to 8 MB by default.
• Signature of callerFilepath() to allow passing RegExp as depth to be used
  for filtering of stack frames.
• Return value of cryptoPrefetcher() now implements the Iterable interface.

Fixed

• common.subst() behavior for @.value@ variables.
• common.callerFilepath() working incorrectly on paths with colon in them.