* 2.7.25 (2017-03-06)

* bug #21671 [Serializer] Xml encoder throws exception for valid data (gr1ev0us)

* bug #21805 Provide less state in getRequestFormat (dawehner)

* bug #21832 [Routing] Ignore hidden directories when loading routes from annotations (jakzal)

* bug #21769 [Form] Improve rounding precision (foaly-nr1)

* bug #21267 [Form] Fix ChoiceType to ensure submitted data is not nested unnecessarily (issei-m)

* bug #21731 Fix emacs link (rubenrua)

* bug #21800 Fix issues reported by static analyze (romainneutron)

* bug #21798 Revert "bug #21791 [SecurityBundle] only pass relevant user provider (xabbuh)" (xabbuh)

* bug #21791 [SecurityBundle] only pass relevant user provider (xabbuh)

* bug #21756 [Yaml] Stop replacing NULLs when merging (gadelat)

* bug #21722 [ExpressionLanguage] Registering functions after calling evaluate(), compile() or parse() is not supported (maidmaid)

* bug #21679 [SecurityBundle] fix priority ordering of security voters (xabbuh)

* bug #21115 [Validator] do not guess getter method names (xabbuh)

* bug #21661 Fix Composer constraints (fabpot)

* bug #21582 [HttpCache] purge both http and https from http cache (dbu)

* bug #21637 [FrameworkBundle] remove translation data collector when not usable (xabbuh)

* bug #21634 [VarDumper] Added missing persistent stream cast (lyrixx)

* bug #21436 [DependencyInjection] check for circular refs caused by method calls (xabbuh)

* bug #21400 [Serializer] fix upper camel case conversion (see #21399) (markusu49)

* bug #21599 [Console][Table] fixed render when using multiple rowspans. (aitboudad)

* bug #21613 [Process] Permit empty suffix on Windows (Bilge)

* bug #21057 [DI] Auto register extension configuration classes as a resource (ro0NL)

* bug #21592 [Validator] property constraints can be added in child classes (angelk, xabbuh)

* bug #21458 [Config] Early return for DirectoryResource (robfrawley)

* bug #21562 [DoctrineBridge] make sure that null can be the invalid value (xabbuh)