update to PSR-4
updated the changelog
start development on 1.3 branch
Merge pull request #249 from xabbuh/psr4

update to PSR-4
make initializer optional

Add a config option to make the initializer optional.
Currently this option is only relevant if sonata admin is used (BC).
Update .travis.yml
Added PHP 5.6 on allow_failures
Merge pull request #254 from Nyholm/patch-1

Added PHP 5.6 and HHVM to travis.yml
Added italian translation
Merge pull request #257 from eiannone/patch-1

Added italian translation
Merge pull request #251 from uwej711/make_initializer_optional

make initializer optional
do not allow colon inside a PHPCR route uri