5.0.0-alpha-1

Added

• [#1159] Add return types to FormMapper. (@jordisala1991)

Changed

• [#1054] Block services tagged with sonata.block are not made public anymore (@dmaicher)

Removed

• [#1158] Remove block serializer configuration (@jordisala1991)
• [#1060] Remove support for Symfony ^4.4 (@jordisala1991)
• [#1060] Remove support for Twig ^2 (@jordisala1991)
• [#1060] Remove support for doctrine/common ^2 (@jordisala1991)
• [#1056] Remove BlockManagerInterface deprecated class. (@jordisala1991)