Fix version number to match readme
Merge pull request #222 from gmisura/master

Fix version number to match readme
Fix typo: s/ssession_is_registered/session_is_registered/
Only match require_once in the VIPInitCheck

Don’t allow themes to `require` `vip-init.php` - force `require_once`.

Fixes #224
Merge pull request #223 from ockham/ssession_is_registered

Fix typo: s/ssession_is_registered/session_is_registered/
Make BaseCheck::get_line() static so we can use it without needing a BaseCheck object
Add PHP-Parser submodule
Use PHP-Parser instead of our own one

To that end, write DirectoryNodeVisitor and ScopeVisitor to sort different
parsed elements by their type and scope path.
Use is[Private|Protected|Public]() to determine the visibility of classes and their members
Use isStatic() to determine if class members are static
Use isAbstract() to determine if classes and their member functions are abstract
Use the 'params' subnode to get a function's or class method's parameters
Use 'args' subnode to get a function call's arguments
Use the 'extends' subnode to determine the parent of a class
Use the 'comments' attribute to get a function's PHPDoc
Use 'startLine' instead of 'line' due to changed parser API
Change a line number in AnalyzedPHPFileTest

In a line-wrapped class member function definition, the new PHP parser
interpretes the first line (holding only 'private') as the relevant
startLine (not the following one containing function some_func() {} ).
The new parser also detects object variables when their members are invoked
Add InAssignmentVisitor to provide the 'in_var' attribute

Also, remove assert_object_property() as it's obsolete now.
Handle the 'new' operator