Add Travis CI for all libraries

[Hywan]

As discussed in the last Hoa Virtual Meeting (hoaproject/ActionBoard#26), we are going to move our CI to Travis.

Progression

• Acl,
• Compiler,
• Consistency,
• Console,
• Database,
• Dispatcher,
• Event,
• Exception,
• Graph,
• Http,
• Iterator,
• Json,
• Locale,
• Mail,
• Math,
• Mime,
• Protocol,
• Registry,
• Ruler,
• Socket,
• Stream,
• String,
• Ustring,
• View,
• Visitor,
• Websocket,
• Zombie.

Blocking

• Remove reserved keyword for PHP-7.1.0 atoum/atoum#598

Important but not blocking

• HHVM incompatibility with directory\factory::getIterator atoum/atoum#624

[Hywan]

Issue template:

Address https://github.com/hoaproject/Central/issues/36.

Travis template:

language: php
php:
  - 5.5
  - 5.6
  - 7.0
  - nightly
  - hhvm
os:
  - linux
matrix:
  allow_failures:
    - php: nightly
  fast_finish: true
notifications:
  irc: "chat.freenode.net#hoaproject"
sudo: false
before_script:
  - if [[ ! $TRAVIS_PHP_VERSION = hhvm* ]]; then phpenv config-rm xdebug.ini; fi
script:
  - composer install
  - vendor/bin/hoa test:run

Everything is already configured on Travis' side.

[Hywan]

We are experimenting with hoaproject/Acl#20 before rushing on all libraries.

[Hywan]

Template for the .travis.yml file has been updated.

[Grummfy]

to help to improve it : http://raphaelstolt.blogspot.be/2016/10/eight-knobs-to-adjust-and-improve-your.html

[Hywan]

@hoaproject/hoackers I need your feedback.
PHP 7 + XDebug + atoum = segfault. This is an issue. However, with PHP 5.6, everything is fine. There is a patch in XDebug but we need to wait for a release from XDebug and Travis to update XDebug.
PHP 7 + atoum = error. This is an issue. However, with PHP 5.6, everything is fine.
PHP 7 + atoum 3.0-alpha = will work soon.

Should we deploy all Travis files with:

• XDebug for PHP 5.6 only,
• atoum 3.0-alpha (through Hoa/Test).

This is what we do in https://github.com/hoaproject/Acl/pull/20/files, except for atoum 3.0-alpha.

If not, then, should we wait?

[Grummfy]

nothing feels good enough for me to go in a specific direction

[Hywan]

Now we are ready. atoum has still some issues with HHVM, but this is not blocking.

[Hywan]

All libraries have Travis enabled, or Travis failing. We must focus on these latters.