Merge pull request schmittjoh#510 from Soullivaneuh/yaml-empty-array

Manage empty array for serializer

fixes dependency for master

fixes a regression

Merge pull request schmittjoh#227 from goetas/read-only-class

Read only class

Merge pull request schmittjoh#187 from mvrhov/noCdata

No CData

Merge pull request schmittjoh#130 from youngguns-nl/datatime_doc

fix wrong quote in used in docs

updates vendors

fixes a bug involving proxies and custom type handlers