* Create new TextField attribute to control maxLength behaviour

* Create test case for maxLinesIncrementalHeight

* fix maxLinesIncrementalHeight set method

* fix editable_test.dart

* Just introducing some proposed API additions, renaming to expands

* Pass minLines and expands through to child widgets and validate

* minLines can't be null, and expands can't be true when maxLines is 1

* Implement minLines and maxLines height sizing logic

* Simplify minLines validation logic

* expands parameter proof of concept

* min/max mixup bug fix, and tests work with expands false

* Test expands=true cases, and fix textPainter.height being out of date

* Test all behavior matrix cases

* min/max assertion more strict, can't be equal

* Tests work that were missing expands serialization

* Action sheet tests no longer fail due to rounding error

* TextFieldFocus test no longer mysteriously fails

* TODOs for making expands nullable. Will depend on how Expanded wrapping works

* Expanded growth happens when expanded is true and maxLines is null

* Test Expanded wrapper

* No more overflow when wrapped in Expanded

* Docs improvements

* expands can be null

* Simplify error cases to support existing behavior

* Docs examples and other docs cleanup

* Expansion up to perfectly meet the parent size

* Fix analyze null error

* Fix test after move to nullable expands

* minLines defaults to null

* expands is now exclusively for expanding to parent height and not growth between min and max

* _layout rewritten to handle max height. Need to fix prefix tests and
reenable expands

* Tests for textfield overflowing parent

* layoutLineBox is documented and private

* expands works in new _layout

* _layout return numbers seem to perfectly match original _layout

* inputWidth comment after trying it out and failing tests

* Fix analyze errors

* WIP prefix/suffix do affect height

* Prefix/suffix and icons affect height, tests pass, but I'm still visually verifying identical to original

* Tall prefix test that verifies pixel perfect layout

* Fix overflowing edge case and test it

* Clean up comments, old code, and todos

* Changing _expands causes relayout. Wasnt able to figure out how to test though...

* Clean up code review comments

* Fix misalignment when tall prefix and border, and clean up related test

* Simple code review cleanup

* Bring back inputWidth to _layout method

* Fix rounding errors showing up in mac tests

* Fix flake by reordering tests. Without this, the dreaded intrinsicwidth flake is reproducible 50% of the time on my machine.

* Fix more rounding error mac tests