chore(travis): temporary workaround for issue 1350

Temporarily use Dart SDK 1.6.0-dev.7.0 (instead of 1.6.0-dev.8.0)
to work around issue #1350 / dartbug 20500.

Closes #1353
Revert "chore: update pubspec.lock file"

Revert commit 620d25354642cdf6ebc9ad0a9226e40f808beb9e as it fails on
Travis → https://travis-ci.org/angular/angular.dart/builds/32481112
chore(testing): fix typo
test(dccd): Add a test for swapping references

closes #1158

Closes #1253
[#1164] move `web_components` line to dev_dependencies in the pubspec.yaml

Closes #1321
reflactor(parser): rename parser_static and parser_dynamic into static_closure_map and dynamic_closure_map

Closes #1250
docs(routing): minor documentation fix

Fixed missing quote and removed comma.

Closes #1319
doc(annotations): improve the doc for @NgCallback

Closes #1296

Closes #1298
fix(ElementBinderBuilder): throw if multiple transcluding directives per node

fixes #1306

Closes #1325
test(css_animate): fix analyzer warning

Remove un-needed code that caused an analyzer warning.

Closes #1287
fix(html_extractor): correct handling of camelCased attributes

fix #1047

Closes #1301
fix(example): cleanup imports for ShadowDOM example

Closes #1323
refactor(compiler): remove WalkingCompiler and WalkingViewFactory
refactor(compiler): rename TaggingCompiler into Compiler and TaggingViewFactory into ViewFactory

Remove Compiler and ViewFactory interfaces because they have only one implementation each.

Closes #1333
test(compiler): rename forBothCompilers to withElementProbeConfig
benchmark(tree): add transcluding components to the TreeComponent benchmark

Closes #1332
feat(OrderBy): allow ordering an Iterable

fixes #1324
feat(OrderBy): allow specifying an Iterable expression

Closes #1329
feat(WTF): Add support for WTF

1) Install https://chrome.google.com/webstore/detail/web-tracing-framework/gmdhhnlkjmknaopofnadmoamhmnlicme
2) Enjoy the visibility

Closes #1354
perf(view): increase view instantiation speed 40%

1) Stop using futures when the value is already cached
2) Remove adding nodes to fake parent during view instantiation

Closes #1358