0.1.1.0

* FIX: prevent two consecutive `readSVar`s giving the same value (see [this issue](https://github.com/leohaskell/skip-var/issues/1))
* FIX: don't keep references to values after `readSVar` has been called (see [this issue](https://github.com/leohaskell/skip-var/issues/3))

0.1.0.0

* Initial release