* Fix [gh #107](https://github.com/awesomized/libmemcached/issues/107):
macOS: deprecated sasl API (improve detection of `libsasl2`).
* Fix [gh #107](https://github.com/awesomized/libmemcached/issues/107):
macOS: deprecated sasl API (improve detection of `libsasl2`).
Update client option documentation.
* Fix [gh #136](https://github.com/awesomized/libmemcached/issues/136):
`libmemcachedutil` is underlinked (link against libmemcached).
Update client option documentation.
* Fix [gh #136](https://github.com/awesomized/libmemcached/issues/136):
`libmemcachedutil` is underlinked (link against libmemcached).