0.20.1 upgrade guide

[buzzdecafe]

2016-04-09 update: reduceBy signature has changed in v0.21.0. Those updating to v0.20.1 from an earlier version should upgrade directly to v0.21.0 to avoid needlessly updating call sites.

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Changes: v0.19.1...v0.20.1

Removals:

• ❌ R.commute (see R.traverse and R.sequence) remove functions deprecated in v0.19.0 #1625
• ❌ R.commuteMap (see R.traverse and R.sequence) remove functions deprecated in v0.19.0 #1625

Deprecations:

• 💾 R.allUniq deprecate R.allUniq #1626

Changes:

• R.zipObj now will truncate to shorter list update zipObj to truncate to shorter list #1669
• R.partition now works with other filterables Implement partition in terms of filter and reject #1655
• R.equals now compares Promises by reference compare Promise objects by identity in R.equals #1619
• R.add and R.subtract coerce arguments to Number coerce arguments to R.add and R.subtract #1580, ad hoc type checking for R.add and R.subtract #1573
• Correct arity in R.juxt, R.cond functions Set arity and curry juxted functions #1571, remove code branch from R.converge implementation #1587
• 🌈 R.either and R.both work with any fantasy-land compatible applicative functor make both and either respect applicative functors again #1566
• Performance improvements:
  • Transducer implementation Optimize R.into to perform mutable reductions #1657
  • R.merge and R.mergeAll Optimize merge and mergeAll to use _objectAssign #1660
  • R.intersection Optimize intersection and intersectionWith to filter the smaller list #1597
  • R.uniqBy Move Set logic in uniqBy into custom _Set type #1639

Additions:

• 🆕 R.until until #1692
• 🆕 R.reduceBy Add function reduceBy (a more general groupBy) #1598
• 🆕 R.applySpec Implement applySpec #1592
• 🆕 R.tryCatch tryCatch for composing with exceptions #1581
• 🆕 R.clamp Clamp #1564