R=rnystrom@google.com, jmesserly@google.com

Review URL: https://codereview.chromium.org//1921913004 .

Closes #421

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1890853003 .

We were closing hidden tests in Engine.close(), but this isn't
necessary. A test is only hidden if it's complete, complete tests
don't block closing their parent suites, *and* closing the parent suite
will close the test anyway.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1879823002 .

Looks like we hadn't run the analyzer against all the top-level
libraries.

We no longer generate a file called runInIsolate.dart, so there's no
reason to fold it out of our stack chains.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1860843002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1859863002 .

Fix _wrapArgs.

See dart-lang/matcher@400e87928fdceeee883c95c8a81e96fdacfdc399

Update README links to configuration documentation

Fix all strong mode warnings in 0.11.x.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1832573003 .

Closes #63

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1829483002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1829533002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1807413002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1801363007 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1813053002 .

Dart 1.10 has been out for a long time now. Pretty much everyone can
safely run "pub run test".

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1808343002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1797113002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1796373002 .

This also adds the ability to pass --name or --plain-name multiple times
on the command line.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1802133002 .

Closes #83

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1782473005 .

Closes #404

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1782173002 .

Closes #401

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1756523003 .

R=abarth@google.com, kevmoo@google.com

Review URL: https://codereview.chromium.org//1731503002 .

I forgot to do this when first adding the feature.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1754503002 .

These allow configuration based on the user's OS and the platform the
test is running on.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1730173004 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1740053002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1732773003 .

R=abarth@google.com, kevmoo@google.com

Review URL: https://codereview.chromium.org//1731503002 .

This means we don't have to explicitly tag those tests as Windows- of
Mac OS-only.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1740433002 .

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1731483002 .