qandidate-labs/qandidate-toggle — pull request #7 by jorgelbg (2014-10-09 14:30:45+00:00)
Title: Adding compatibility with symfony/expression-language

Adding the ability to process string expressions using the
symfony/expression-language. It keeps backward compatibility to the
provided operators and with any new operator defined using the default
mechanism.

One upside down with this approach is that you can have a full object
inside the context and evaluate on its attributes using a symfony
expression.