def analyze
@changes = sort_changes(@changes)
@changes = @changes.map {|file_path, times_changed| {:file_path => file_path, :times_changed => times_changed }}
calculate_revision_changes
@method_changes = sort_changes(@method_changes)
@method_changes = @method_changes.map {|method, times_changed| {'method' => method, 'times_changed' => times_changed }}
@class_changes = sort_changes(@class_changes)
@class_changes = @class_changes.map {|klass, times_changed| {'klass' => klass, 'times_changed' => times_changed }}
end