Allow direct access to map variables and object properties

[cjbrooks12]

Propose a new "clog" syntax that allows direct access to object variables. New syntax looks like:

${key | pipes }

Rather than finding an input sequentially, this will look for a property on the object to use as the base input. Objects will be traversed in the order given, looking for the specified bean-style property on the object or calling the get(String) method on it. The first object that returns a non-null result will be chosen. As a fallback, allow for "dynamic" getters, which call any spell that does not accept parameters to generate the initial result.