Make updater can insert any processes before `CATransaction.commit`

[ra1028]

close #36

Checklist

• [x] All tests are passed.
• [x] Added tests.
• [x] Documented the code using Xcode markup.
• [x] Searched existing pull requests for ensure not duplicated.

Description

Breaking Changes

• Refactor method signature and responsibility of the UITableViewUpdater/UICollectionViewUpdater. You can now intercepts arbitrary processes before or after updates, for example:

  open func performDifferentialUpdates(target: UITableView, adapter: Adapter, stagedChangeset: StagedDataChangeset) {
  super.performDifferentialUpdates(target: target, adapter: adapter, stagedChangeset: stagedDataChangeset)
  
  if stagedChangeset.allSatisfy({ $0.hasChanges }) {
      let y = target.contentSize.height - (target.bounds.height - target.adjustedContentInset.bottom)
      let contentOffset = CGPoint(x: target.contentOffset.x, y: y)
      setContentOffset(contentOffset, animated: true)
  }
  }

• Remove completion from Renderer.

• Add completion to UITableViewUpdater/UICollectionViewUpdater.

• Change constraints of type parameters Adapter of UITableViewUpdater/UICollectionViewUpdater to UITableViewAdapter/UICollectionViewAdapter.

Related Issue

https://github.com/ra1028/Carbon/issues/36

Motivation and Context

See related issue.

Impact on Existing Code

See description.