* 3.1:
added a comment about a workaround
[Finder] no PHP warning on empty directory iteration
[HttpKernel] Fixed the nullable support for php 7.1 and below
fixed CS
[Form] Fix typo in doc comment
Fix version constraint
[Config] Handle open_basedir restrictions in FileLocator
Fixed bad merge
[DoctrineBridge][PropertyInfo] Treat Doctrine decimal type as string
[bugfix] [Console] Set `Input::$interactive` to `false` when command is executed with `--quiet` as verbosity level
Use JSON_UNESCAPED_SLASHES for lint commands output
Fixed collapsed ChoiceType options attributes
[FrameworkBundle] Remove cache clearer default value in config
Consider the umask setting when dumping a file.
Fixed the nullable support for php 7.1 and below
Make ReflectionExtractor compatible with ReflectionType changes in PHP 7.1
