dkubb/memoizable — pull request #14 by ys (2014-03-04 15:52:38+00:00)
Title: Update version of thread_safe to ~> 0.2.0

Updating to the latest version.

Using it with Rails 4.0.3 brings conflicts
```
rails (= 4.0.3) ruby depends on
thread_safe (0.2.0)
```