Use of this file was eliminated in e7657b94.

* Revert "Revert "fix --force-upgrade script; upgrade to the latest package versions (#12700)" (#12729)"

This reverts commit 7f0d4f4c.

* keep linter pinned at 0.1.35

This reverts commit 5b357500.

* fix updrade script; upgrade to the latest package versions

* exclude special dependencies from transitive closure

* fix stack trace handling in flutter_test due to stack_trace change

* change type on _emptyStackTrace

* Force upgrade update packages with improved update process.

* Update packages

* Revert "Update packages"

This reverts commit a37de26d3f4f7f5a15746ff791002625faa3d3c0.

* Pin all dependencies ONCE AND FOR ALL

This replaces the secret `flutter update-packages --upgrade` with a destructive `flutter update-packages --force-upgrade` that actually goes and pins every dependency and transitive dependency in every flutter package to the same version.

* Add comments.

Also, add tests to verify that our coverage is actually being tested!

https://github.com/flutter/flutter/issues/10688

https://github.com/flutter/flutter/issues/10688

* Bump to Dart SDK 1.24.0-dev.6.7.

* nits and fixes

VERSION: 0.0.7-dev
flutter: 0.0.27-dev
flutter_driver: 0.0.5-dev
flutter_test: 0.0.5-dev

VERSION: 0.0.6
flutter: 0.0.26
flutter_driver: 0.0.4
flutter_test: 0.0.4

* Rev versions for alpha branch

* Rev versions after alpha