* Add tests for baseline alignments
* Merge baseline alignment algorithm to the main stack algorithm
- Baseline alignment is now part of the main stack algorithm.
- ASStackBaselinePositionedLayout is no longer needed and removed.
* All snapshot test cases of ASStackLayoutSpec are passing now
* Remove baselineRelativeArrangement
* Remove TODO
* Minor fixes in cross size determination step
* Add test case for TextKit truncation style
* Add fast path for text node measurement with default truncation
* Use fast path more often
* Reverse options order
* Simplify implementation – no functional change
* Share "isScaled" variable
* Intersect with constrained rect
* Add a failing test case for fast-path truncation
* Add some more truncation tests, using slow path as reference image
* Update the tests
* In ASTextKitRenderer, intersect bounds with constrained rect
* Add test case for TextKit truncation style
* Add fast path for text node measurement with default truncation
* Use fast path more often
* Reverse options order
* Simplify implementation – no functional change
* Share "isScaled" variable
* Intersect with constrained rect
* Add a failing test case for fast-path truncation
* Add some more truncation tests, using slow path as reference image
* Update the tests
* In ASTextKitRenderer, intersect bounds with constrained rect
* Use maximumNumberOfLines property in text kit fast path
Add reference images
Disable fast-path for max-one-line case
* Remove unneeded snapshot files
* Add support for flex factor
* Add snapshot tests
* Respect child specified size from ASLayoutable
* Add new snapshot test images
* Fix rebase conflict
* Add ability to force the size which an image node is rendered.
* Add unit tests for forced scaling.
* Whoops, need results!
* Round forced scaling.
* Check size of contents too.
* Remove unnecessary container node.
* [ASTextNode] Fix highlighting when textContainerInsets are set.
* Add ASTextNodeSnapshotTests to xcodeproj.
* Add snapshot test for container inset and highlighting.
