undefined method 'text?' with ActiveRecord 4.2

[activefx]

NoMethodError being raised when using flex_columns with Rails 4.2. ActiveRecord 4.2 removed the #text? method from its API.

     NoMethodError:
       undefined method `text?' for #<ActiveRecord::ConnectionAdapters::Column:0x007ff023f508c8>
     # ./lib/flex_columns/definition/flex_column_contents_class.rb:287:in `find_column'