This warning made sense when we had static attributes, since
somebody might try to write something like:
```rb
factory :composer do
self.name = "Daniel"
end
```
That would create a static declaration when the factory was defined,
then raise the error about avoiding writers when the factory was run.
Now this code will raise a NoMethodError right away when the factory is
being defined.
* Alphabetize gem listing in various Gemfiles [Rubocop Bundler/OrderedGems]
* Fix alignment of if/else/end statement [Rubocop Layout/ElseAlignment]
* Method definitions should have a empty line between them [Rubocop Layout/EmptyLineBetweenDefs]
* Modules, Classes, and blocks should have an empty line around them [Rubocop]
Cops:
Layout/EmptyLinesAroundBlockBody
Layout/EmptyLinesAroundModuleBody
Layout/EmptyLinesAroundClassBody
Layout/EmptyLinesAroundAccessModifier
* Keep a blank line before and after access modifiers [Rubocop Layout/EmptyLinesAroundAccessModifier]
* Remove misc extra whitespace [Rubocop Layout/ExtraSpacing]
* Indent the first line of the right-hand-side of a multi-line assignment [Rubocop Layout/IndentAssignment]
* Remove extraneous whitespace [Rubocop]
Cops:
Layout/IndentationWidth
Layout/LeadingCommentSpace
Layout/SpaceAroundEqualsInParameterDefault
Layout/SpaceInsideArrayLiteralBrackets
Layout/SpaceInsideBlockBraces
Layout/SpaceInsideParens
Layout/TrailingBlankLines
* Revert rubocop changes to gemfiles; exclude files from rubocop checks
The files in gemfiles/ are generated by Appraisal, so we shouldn't edit them. Instead, let's tell RuboCop to exclude this directory.
