Annotate Models Versions Save

Nothing annotated unless options[:model_dir] is specified, #234

• Makes it possible to wrap annotations, #225
• Fix single model generation, #214
• Fix default value for Rails 4.2, #212
• Don't crash on inherited models in subdirectories, #232
• Process model_dir in rake task, #197

This is the same as 2.6.4.

• Skip "models/concerns", #194
• Fix #173 where annotate says "Nothing to annotate" in rails 4.2
• Display an error message if not run from the root of the project, #186
• Support rails 4.0 new default test directory, #182
• Add an option to show timestamp in routes "-timestamp", #136
• Skip plain ruby objects if they have the same class name as an ActiveRecord object, #121

• Fix #175

• Retain the current annotate block unless --force is specified
• Always load models, since they may not be autoloaded by Rails
• The pg array type is now detected (see #158)