[widget] Fix array to string convertion when using renderId with an array as value
Fix unit tests
Fix travis configuration
Alias branch master branch to version 1.5 for tagging

Close #24
Merge pull request #21 from LExpress/fix-array-widget

[widget] Fix array to string convertion when using renderId with an array as value
Prepare release 1.5
Bump version to 1.5.1
Update install note
project:optimize Continue in case of execption when loading a module config
Merge pull request #27 from LExpress/project-optimize

project:optimize Continue in case of exception when loading a module config
Add a warning in README about not using this fork for new projects
Merge pull request #28 from damienalexandre/warningReadMe

Add a warning in README about not using this fork for new projects
Fix PHP 5.5+ compatibility + require PHP 5.3+
Fix string transformation to keep BC
Update README for the version of PHP
Merge pull request #26 from LExpress/php-5.5

Fix PHP 5.5+ compatibility + require PHP 5.3+
Prepare v1.5.2
Bump to 1.5.3-DEV
Update changelog
Updated swiftmailer to v4.1.8