New

• Added BFTask.+taskForCompletionOfAnyTask:.
  This method creates a task that will be completed when first of the provided task completes.
  #229 by Florent Vilmart
• New constants defined for userInfo keys of multi-error/multi-exception.
  #238 by Takeru Chuganji
• Replaced Bolts class, BoltsVersion macro with a constant string.
  #239 by Nikita Lutsenko

Improved

• Reduced stack frame from continuation stack trace if task is completed.
  #237 by Nikita Lutsenko

Fixed

• Fixed disposing of BFCancellationToken when it has registrations.
  #226 by Nikita Lutsenko
• Fixed and improved documentation.
  #230 by Paweł Wrzosek
• Fix warnings that surfaced in the release version of Xcode 7.3.
  #231 by Nikita Lutsenko
• Fixed edge case scenario of BFTask.+taskForCompletionOfAllTasks: wouldn't finish or wouldn't be cancelled.
  #235 by Nikita Lutsenko