Implement Temping.cleanup

[bolshakov]

Hello

I implemented Temping.cleanup method. It is very helpful when you want to test statically defined models.

RSpec.describe SomeModelConcern do 
  Temping.create User

  after do 
    Temping.cleanup
  end 

  include_examples "concern behaviour", User
end 

[kitop]

Thanks @bolshakov

[kitop]

Released in 3.5.0

[bolshakov]

Thanks!