Fix DoctrineDriverTest random failures

Do not compare "created" timestamps of class metadata as it may fail
test on busy CPU
Merge pull request #155 from eugene-dounar/fix-doctrinedriver-test

Fix DoctrineDriverTest random failures
Allow deserialization to constructed objects

Pass DeserializationContext to object constructors.
Merge pull request #160 from eugene-dounar/pass-context-to-constructor

Allow deserialization to constructed objects
Update CHANGELOG.md
Update UPGRADING.md
Add virtual properties yaml example
Merge pull request #163 from adrienbrault/patch-2

Add virtual properties yaml example
some cs fixes
Fix inline bug with empty child
Merge pull request #165 from adrienbrault/inlining-fix

Fix inline bug with empty child
Merge branch 'master' of https://github.com/schmittjoh/serializer

Conflicts:
	src/JMS/Serializer/Annotation/Discriminator.php