* Uses Paperclip's Tempfile instead of Ruby's in Thumbnail
* Also includes a test for TempfileFactory to be sure it does not revert to similar behavior
* In the tests, give the OS some wiggle room in the Tempfile name to ensure the error does not occur before we are ready for it. The wiggle room is needed because the randomized part of the name has a variable number of characters.

Rescue only `NotIdentifiedByImageMagickError` in
`Attachment#post_process_style`. Other errors should bubble up, because
they are meaningless for the end-user, but important for the programmer.

Fixes #1352.

Remove RubyForge project name from gemspec

http://docs.travis-ci.com/user/workers/container-based-infrastructure/

With Container based CI, public projects can cache the results of bundle
install

It's useless because there is the same conditional in https://github.com/thoughtbot/paperclip/blob/master/lib/paperclip/railtie.rb#L25, and if ActiveRecord is not defined, Glue will not run.

Updated gemspec to fix issue #1729

Updated gemspec to require aws-sdk gem ~> 1.6

* Move the thanks to contributors to the contributing section
* Introduce the new "About thoughtbot" section.

The container infrastructure (beta) has many advantages:
* More memory
* More CPU
* builds start much faster.
* builds run much faster (usually)

However, `sudo` cannot be used when running in this environment (which
is enabled with the `sudo: false` configuration.

The reason behind this I'm trying to use StringioAdapter inside the mailer, and it fails because `length` used in one of the `mail` gem:
https://github.com/mikel/mail/blob/master/lib/mail/message.rb#L1997

Also you can see that normally `size` has `length` alias, for example in a `StringIO` class:
http://ruby-doc.org/stdlib-1.9.3/libdoc/stringio/rdoc/StringIO.html#method-i-length

Let me know, if this change requires test case, I will add it.

Turns out that aws-sdk v2 isn't backwards compatible in the slightest,
so we should cap that at v1. And cucumber 1.3.17 was giving issues with
ruby 2.2.0. So let's update those.

Update copyright to 2015.

As referenced in #1739

Just because the `Rails` constant is defined, it doesn't mean we're
actually in a Rails app. Since there are people who use Paperclip
outside of Rails, and there's no reason we shouldn't be able to run in
those situations. This commit checks for `Rails.env` instead of just
checking for `Rails` and assuming `Rails.env` works.

typo in NEWS

typo! :nails:

Change to `appraisal install`

This reverts commit 06802254.

Full test not a here ?

executing to `rake appraisal:install` log

```
`rake appraisal:install` task is deprecated and will be removed soon. Please use `appraisal install`.
```

Cocaine changes how it returns the supplied path in 0.5.5. While this
has no effect on the workings of Paperclip in a normal capacity, it does
break the tests. This change fixes that and updates the cocaine
dependency to 0.5.5.

Added manual installation instructions for `file.exe` on Windows

Turns out that between fog 1.22.0 and fog 1.25.0, there was a change to
how fog builds S3 expiring URLs. This changes to test to be the common
point between the two versions. All we need to do here is make sure that
the expiring URL is being constructed.

In the process, this also updates all the appraisal-generated
Gemfiles.

Also, in the process, this meant I had to take away the builder version
restriction. This was put in so that `bundle`ing wouldn't take forever,
but I'm unsire whether this needed to happen with this version or if
builder just needed to be separate from the Gemfile. I'm commimtting
this and asking the people who reported the problem. If you don't see a
revet commit, everything was fine.

This reverts commit ae3ec237.

This reverts commit 8d70c198.

This reverts commit 8e0eb4ce.