libsodium-1.0.18.2: CHANGELOG.md

# Version 1.0.18.2

* Add missing dependency on `c2hs`.

* Add missing function: `sodium_free`.


# Version 1.0.18.1

* Improve support for opaque C structs (`Storable`, `Ptr`, allocation).


# Version 1.0.18.0

* Initial version.