This is the GA release of the 2.2.4 SDK. It is a maitenance release
with several fixes:
* PCBC-401: embed PHP classes using pcs. This fixes performance issue,
where the extension spending time during each request to evaluate
and load Couchbase classes written in PHP. The pecl/pcs extension
have to be installed and loaded before loading couchbase SDK.
* PCBC-439: reset MCISCOMPRESSED before type detection.
This fixes decoding compressed values.
* PCBC-438: install callback for replica read command.
This fixes getFromReplica() returning NULL.
* Documentation updates and bug fixes