Update .travis.yml

Add PHP 5.5 to Travis-CI testing and allow it to fail.
[Form] Fix failing `MonthChoiceList` in PHP 5.5
[Locale] Fix failing `StubIntlDateFormatter` in PHP 5.5
[Locale] Fix failing `StubIntlDateFormatter` tests in PHP 5.5
[Locale] Adjust `StubIntlDateFormatter` to have new methods added in PHP 5.5
merged branch stloyd/feature/travis_php55 (PR #6552)

This PR was merged into the 2.0 branch.

Commits
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73d9cef [Locale] Adjust `StubIntlDateFormatter` to have new methods added in PHP 5.5
b2ce983 [Locale] Fix failing `StubIntlDateFormatter` tests in PHP 5.5
913b564 [Locale] Fix failing `StubIntlDateFormatter` in PHP 5.5
8ae773b [Form] Fix failing `MonthChoiceList` in PHP 5.5
f4ce2f1 Update .travis.yml

Discussion
----------

[2.0] Add testing of PHP 5.5 on Travis-CI & fix failing code
[DependencyInjection] fixed CS
[DependencyInjection] added some tests for PhpDumper when the container is compiled
[DependencyInjection] fixed PhpDumper when an inlined service definition has some properties
[DependencyInjection] fixed PhpDumper optimizations when an inlined service depends on the current one indirectly
[Console] Make getTerminalWith & getTerminalHeight public
merged branch egeloen/f-2.0-terminal-width (PR #6571)

This PR was merged into the 2.0 branch.

Commits
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f299bd0 [Console] Make getTerminalWith & getTerminalHeight public

Discussion
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[Console] Make getTerminalWith & getTerminalHeight public

Bug fix: yes
Feature addition: yes
Backwards compatibility break: no
Fixes the following tickets: ~
Todo: -
License of the code: MIT
Documentation PR: ~

After demand in #6567, I open an other one on the 2.0 branch.
Restrict Monolog version to be in version <1.3

Because of conflict between `HttpKernel\Log\LoggerInterface` and `Psr\Log\LoggerInterface` (PSR-3)
merged branch stloyd/patch-1 (PR #6572)

This PR was merged into the 2.0 branch.

Commits
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ba2d035 Restrict Monolog version to be in version <1.3

Discussion
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[2.0] Restrict Monolog version to be in version <1.3

Because of conflict between `HttpKernel\Log\LoggerInterface` and `Psr\Log\LoggerInterface` (PSR-3).

Main `composer.json` already restricts to proper version, but bridge allows also conflicting version.

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by Seldaek at 2013-01-05T14:58:18Z

Looks fine, I will try to wrap up the 1.3.0 soon so you can migrate the code to use it (well it can already be done I guess in the master branch).
merged branch fabpot/container-dumper-fixes (PR #6565)

This PR was merged into the 2.0 branch.

Commits
-------

e0923ae [DependencyInjection] fixed PhpDumper optimizations when an inlined service depends on the current one indirectly
cd15390 [DependencyInjection] fixed PhpDumper when an inlined service definition has some properties
e939a42 [DependencyInjection] added some tests for PhpDumper when the container is compiled
3827e3e [DependencyInjection] fixed CS

Discussion
----------

[DependencyInjection] Fixed PhpDumper when compiling inlined services
Merge branch '2.0' into 2.1

* 2.0:
  Restrict Monolog version to be in version <1.3
  [Console] Make getTerminalWith & getTerminalHeight public
  [DependencyInjection] fixed PhpDumper optimizations when an inlined service depends on the current one indirectly
  [DependencyInjection] fixed PhpDumper when an inlined service definition has some properties
  [DependencyInjection] added some tests for PhpDumper when the container is compiled
  [DependencyInjection] fixed CS
  [Locale] Adjust `StubIntlDateFormatter` to have new methods added in PHP 5.5
  [Locale] Fix failing `StubIntlDateFormatter` tests in PHP 5.5
  [Locale] Fix failing `StubIntlDateFormatter` in PHP 5.5
  [Form] Fix failing `MonthChoiceList` in PHP 5.5
  Update .travis.yml

Conflicts:
	src/Symfony/Bridge/Monolog/composer.json
	src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9.php
	src/Symfony/Component/Form/Extension/Core/ChoiceList/MonthChoiceList.php
	tests/Symfony/Tests/Component/DependencyInjection/Fixtures/yaml/services9.yml