Update the ABI version to 1:0:0
Update the ABI version to 1:0:0

As per the [libtool versioning guidelines][1].

>If any interfaces have been added, removed, or changed since the
>last update, increment current, and set revision to 0.

[1]: https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html

am11/libsass,am11/libsass,am11/libsass,am11/libsass,am11/libsass