1.2.0

Added

• lib: The find reducer now accepts an optional :default value for when
  nothing could be found in the transduction that matched the predicate.
• fset: transduce implementations for set, map, seq, and bag.
• fset: Reducers for set, map, seq, and bag.

Changed

• lib: Conditions signalled somewhere in the transduction chain can now be
  caught per-item, with various restarts available to rehandle or skip the
  problematic item.
• jzon: plists now write as JS objects.