Added support for field options to FieldBuilder
Code style fix
Removed check for instantiated options array
Removed FieldBuilder::unsigned() method as it is only supported by MySQL
Fix typos - QueryBuilder
Merge pull request #894 from piotrantosik/patch-2

Fix typos - QueryBuilder
Fix tests after merge of QueryBuilder#addCriteria changes.
joinColumn is not required in manyToMany
annotation behavior copied
[DDC-2792] Fix fatals
Merge branch 'DDC-2792'
Merge pull request #820 from apancutt/master

Added support for field options to FieldBuilder
Ensure <cascade/> elements preceed <join-columns/>

When converting annotations based metadata to XML, the position of the <cascade/> elements resulted in XSD validation errors caused by the definitions of the association ComplexTypes:
- https://github.com/doctrine/doctrine2/blob/master/doctrine-mapping.xsd#L463
- https://github.com/doctrine/doctrine2/blob/master/doctrine-mapping.xsd#L482
- https://github.com/doctrine/doctrine2/blob/master/doctrine-mapping.xsd#L495
- https://github.com/doctrine/doctrine2/blob/master/doctrine-mapping.xsd#L517

Since changing the XSD might result in validation problems in existing mappings, changing the XmlExporter seems a better approach.

Note that the '<cache/>' element is not yet generated by the XmlExporter, but according to the XML Schema, it should precede the '<cascade/>' element.
Respected 'inheritanceType' at Entity level

It was (incorrectly) fetched from Table-level.
http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/annotations-reference.html#annref-inheritancetype
Exclude exporting inheritanceType for INHERITANCE_TYPE_NONE
Merge pull request #897 from holtkamp/patch-3

Respected 'inheritanceType' at Entity level
Merge pull request #896 from holtkamp/patch-2

Ensure <cascade/> elements preceed <join-columns/>
fix connection mock fetchColumn signature
Merge pull request #900 from deeky666/fix-connection-mock

Fix connection mock fetchColumn signature
exclude unsupported HHVM + PostgreSQL and HHVM + Mysqli from travis build matrix for now
Merge pull request #901 from deeky666/disable-travis-hhvm-unsupported-drivers

Exclude HHVM + PostgreSQL and HHVM + Mysqli from travis build matrix