* 3.4:
[TwigBridge] Fix namespaced classes
bumped Symfony version to 3.3.2
updated VERSION for 3.3.1
updated CHANGELOG for 3.3.1
[DependencyInjection] Fix named args support in ChildDefinition
[Cache] Fallback to positional when keyed results are broken
[HttpFoundation][FrameworkBundle] Revert "trusted proxies" BC break
[Cache] MemcachedAdapter not working with TagAwareAdapter
Remove closure-proxy leftovers
fix used class name in deprecation message
[DependencyInjection] Use more clear message when unused environment variables detected
[Form][Profiler] Fixes form collector triggering deprecations
mitigate BC break with empty trusted_proxies
[Profiler] Never wrap in code excerpts
[Form][FrameworkBundle] Remove non-existing arg for data_collector.form
explain that a role can be an instance of Role
[Cache] fix Redis scheme detection
Implement ServiceSubscriberInterface in optional cache warmers
Deprecate passing a concrete service in optional cache warmers
mix attr options between type-guess options and user options
