Fix

• #40 The element updates are included in stage 1 changeset to fix the animation glitch occurs when element updated with other differences.
  The animation glitch when the difference contains section updates was fixed in #10 , but another glitch occurred when element update was included.
  Although this is a workaround, the glitch of the latter is more likely to occur, so I fixed.

Feature

• Make Optional conform to ContentEquatable

Improvements

• Performance improved by 1.5x with Swift4.2 🎉
• Add computed properties sectionChangeCount, elementChangeCount, hasSectionChanges andhasElementChanges in Changeset.
• Add ContentEquatable.

Breaking change

• End support for Swift 4.1 or lower.

Features

• Add support for Swift4.2 (by @Sameesunkaria #30)
• macOS is now supported with UI extension (by @OskarGroth #29)
• Add subspec AppKitExtension for macOS UI

Breaking changes

• The subspec name UIExtensions is now renamed to UIKitExtension

Fix

• Fix unexpected crashs by updating the data held by the data-source inside performBatchUpdates (#17 reported by @Usipov).

Fix

• #15 Fix behavior when hashValue duplicated.

Fix

• Fix the animation glitch occurs when section updated by including sectioned element updates in changeset stage 4 (#10)

Breaking changes

• Section is renamed to ArraySection
• DifferentiableSection is inherited from Differentiable
• DifferentiableSection no longer requires a model now

Improvement

• Got a bit better performance

Change

• Set the target collection to data of the last stage changeset.

Breaking changes

• Turn back the name of Differentiable.identifier to differenceIdentifier
• Turn back the name of associated type Differentiable.Identifier to DifferenceIdentifier

Fix

• Fixed a crash bug in edge cases of sectioned collection diffing (#5 reported by @Sameesunkaria)