Improve yaml documentacion Fix #100

Extrtacted from https://github.com/schmittjoh/serializer/blob/master/tests/JMS/Serializer/Tests/Metadata/Driver/yml/ObjectWithVirtualProperties.yml
Merge pull request #221 from BraisGabin/patch-1

Improve yaml documentacion Fix #100
Allow to fetch data from has*() with public_method

Same as is*() method, has*() is mostly used with booleans
tests for accessor (public_method)
Merge pull request #243 from jaymecd/patch-1

Allow to fetch data from has*() with public_method
Added test for leading backslash in front of class name to TypeParserTest

testLeadingBackslash added to check if there's a leading backslash in
front of a class name.

Signed-off-by: Alexander Kluth <contact@alexanderkluth.com>
Merge pull request #245 from deralex/master

Added test for leading backslash in front of class name to TypeParserTest
Add support for XML namespace on the XML root element
Merge pull request #246 from andreasferber/xml-rootnamespace

XML root element namespace support
Changed some constraint to allow latest versions
Merge pull request #251 from stof/patch-2

Changed some constraint to allow latest versions
moves driver creation to dedicated class (closes #247)
Merge branch 'master' of git://github.com/schmittjoh/serializer
fixes a regression
Fixed yml mapping file name
adds a test for handling single table inheritance with proxies
Merge pull request #256 from spolischook/patch-2

Fixed yml mapping file name
Testing collections of polymorphic objects
Fix in GraphNavigator for serialization of polymorphic objects
Fix in GraphNavigator for serialization of polymorphic interfaces