proc_eval 2.0.0

Adds an `evaulate` refinement method to Proc and Object instances. The goal of this gem is to allow evaluation of variables, procs, and lambdas with the same level of flexibility. The `evaluate` method has been added to the Object class to simply return the value of the variable. The `evaluate` method is overriden on the Proc class to allow parameters to be passed to lambdas in the same flexible way as procs. This takes into consideration, required/optional/remaining parameters, and required/optional/remaining keyword parameters. For information on Refinements, see: - https://ruby-doc.org/core-2.0.0/doc/syntax/refinements_rdoc.html - https://ruby-doc.org/core-2.1.0/doc/syntax/refinements_rdoc.html - https://ruby-doc.org/core-2.2.0/doc/syntax/refinements_rdoc.html - https://ruby-doc.org/core-2.3.0/doc/syntax/refinements_rdoc.html - https://ruby-doc.org/core-2.4.0/doc/syntax/refinements_rdoc.html - http://yehudakatz.com/2010/11/30/ruby-2-0-refinements-in-practice/