* [fuchsia] Create an entry-point script to run driver tests on Fuchsia

This script currently only paves the device. This will soon run a
driver test on a NUC in LUCI.

* reference the engine script and fix comment

https://github.com/flutter/engine/compare/4e9e69d2b392...f001ea29f1b9

git log 4e9e69d2b392..f001ea29f1b9 --first-parent --oneline
2020-01-08 nurhan@google.com adding windows platform to felt. fixing signal (flutter/engine#15111)


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https://github.com/flutter/engine/compare/a50f1ef56a05...4e9e69d2b392

git log a50f1ef56a05..4e9e69d2b392 --first-parent --oneline
2020-01-08 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from nbeLe... to gL-XG... (flutter/engine#15253)
2020-01-08 stuartmorgan@google.com Add plugin_registrar_windows.h to published wrapper (flutter/engine#15265)
2020-01-08 skia-flutter-autoroll@skia.org Roll src/third_party/dart bebc7d3af5bd..c0ca187f2699 (37 commits) (flutter/engine#15252)
2020-01-08 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from xYmDF... to oNKzr... (flutter/engine#15257)


If this roll has caused a breakage, revert this CL and stop the roller
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This adds CatmullRomCurve animation curve, and a CatmullRomSpline, which is what it uses to do interpolation.

This allows us to create animation curves which can smoothly interpolate the values given to the curve.

Since I've introduced a 2D spline curve, I also created a Curve2D base class for such parametric curves.

https://github.com/flutter/engine/compare/3f52888b3bcf...a50f1ef56a05

git log 3f52888b3bcf..a50f1ef56a05 --first-parent --oneline
2020-01-08 gw280@google.com Migrate flutter_runner from flutter_runner::{Thread,Loop} to fml::{Thread,MessageLoop} (flutter/engine#15118)
2020-01-07 ferhat@gmail.com Refactor BitmapCanvas, lazily allocate canvas, fix image composition bug. (flutter/engine#15153)
2020-01-07 ferhat@gmail.com Recover when browser throws on ImageElement.decode due to too many images (flutter/engine#15160)
2020-01-07 garyq@google.com Fix RectHeightStyle::kMax ascent computation bug (flutter/engine#15106)


If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
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This is follow-up to https://github.com/flutter/flutter/commit/ee7a37f1d3f12ca815d755a557f16765942897a4.

Revert "Document reasoning for why CustomMultiChildLayout size can't depend on children and how to do it (#47797)" (#48369)

This reverts commit de2514c0 as it breaks analyze-linux and web_tests-0-linux checks.

https://github.com/flutter/engine/compare/3851981b863a...3f52888b3bcf

git log 3851981b863a..3f52888b3bcf --first-parent --oneline
2020-01-07 skia-flutter-autoroll@skia.org Roll src/third_party/skia d445e2b6fcf1..91e0d7526944 (44 commits) (flutter/engine#15232)
2020-01-07 dnfield@google.com Font subset (flutter/engine#14828)
2020-01-06 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/linux-amd64 from MwGkB... to xYmDF... (flutter/engine#15145)
2020-01-06 skia-flutter-autoroll@skia.org Roll fuchsia/sdk/core/mac-amd64 from Kom_K... to nbeLe... (flutter/engine#15149)
2020-01-06 skia-flutter-autoroll@skia.org Roll src/third_party/skia 6791ee2f8059..d445e2b6fcf1 (1 commits) (flutter/engine#15148)
2020-01-06 skia-flutter-autoroll@skia.org Roll src/third_party/dart 76e3faa9824e..bebc7d3af5bd (1 commits) (flutter/engine#15146)
2020-01-04 skia-flutter-autoroll@skia.org Roll src/third_party/dart 2f57602411b3..76e3faa9824e (37 commits) (flutter/engine#15143)


If this roll has caused a breakage, revert this CL and stop the roller
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Please CC garyq@google.com on the revert to ensure that a human
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Document reasoning for why CustomMultiChildLayout size can't depend on children and how to do it (#47797)

This reverts commit 866fa64d.

* Reword flutter run help screen.

* As per Hixie request, added Efthymios Sarmpanis to the AUTHORS file

* fix test
Co-authored-by: Efthymis Sarmpanis <e.sarbanis@gmail.com>

recomputing the path context in the getter violates flutter repo style guide and adds a small but measurable overhead to all path operations

`showCheckboxColumn` will determine whether or not selectable rows in
DateTable or PaginatedDataTable will contain a leading CheckBox.