Fixed generated phpdoc of equals method to have a type hint

Fixed wrong parameter hint on VirtualColumn methods

Fixed phpdoc of isNew

Fixed phpdoc of getVirtualColumn

importFrom should return $this for fluid interface, currently it returns the result from fromArray which is void

Fixed phpdoc of ServiceContainerInterface

Fixed bug with ExtensionObject has some whitespaces before class-keyword

Changed TemporalAccessor to check if the field is instance of DateTime instead of check for null (Better for autocompletion)

Added missing @throw to phpdoc of getVirtualColumn
Merge pull request #440 from mpscholten/master

Fixed some phpdoc; gave hasVirtualColumn the expected fluid behaviour; fixed whitespaces before class-keyword