PHP Couchbase Extension 2.4.2

* PCBC-515: allow to specify expiration for subdocument mutations
* PCBC-509: implement fulldoc operations for subdoc API
* PCBC-442: fail fast view requests on ephemeral buckets
* PCBC-513: make public API non-final (remove final attribute from classes and methods)

PHP Couchbase Extension 2.4.1

* PCBC-493: Implement subdoc GET_COUNT API.
* Update AnalyticsQuery API: removed experimental
  hostname() method as it derived from cluster config now.
* Allow to override default pool connectime idle
  time with `couchbase.pool.max_idle_time_sec` INI setting.
* PCBC-503, PCBC-504: Improve running tests.

PHP Couchbase Extension 2.4.0

* Add more examples (XATTRs and RBAC user management).
* PCBC-505: Enable error maps for libcouchbase 2.8.0. For higher versions it will be enabled by libcouchbase.
* PCBC-499: Expose more query options on N1QL query for advanced tuning query performance
* PCBC-485: Expose enhanced error message. The server might fill properties "context" and "ref" of the error.

PHP Couchbase Extension 2.3.4

* PCBC-495: update user management APIs
* PCBC-478: add tests for Error Map using CouchbaseMock

PHP Couchbase Extension 2.3.3

* PCBC-487: Fix adhoc vs prepared query logic. It should be inversed manually before 2.3.3.
* PCBC-494: Fix double free error in passthruEncoder
* PCBC-475: Add support for Term Range Query (full text search).
* PCBC-475: Add support for geo search queries.
* PCBC-468: Add support for user CRUD in ClusterManager
* PCBC-489: Add shortcut for PasswordAuthenticator as Cluster->authenticateAs($username, $password)

PHP Couchbase Extension 2.3.2

* PCBC-473: fix incorrect bucket reference copy in subdocument mutation/lookup builders, which might lead to segfault.
* PCBC-474: fix segfault when using ViewQuery::keys()
* PCBC-476: do not call destructors on unintialized ZVALs. Fixes possible segfaults with view queries on PHP 5.x.
* PCBC-477: lookup JsonSerializable interface in run time, instead of compile time using php_json_serializable_ce symbol. This fixes support on some 5.4-5.5 builds.
* PCBC-479: do not allow to create objects in invalid state. For example Cluster might return an instance, and only show PHP warning on invalid arguments.
* PCBC-481: Bucket->counter() without specifying delta value results in null pointer dereference.
* PCBC-482: mapSize/setExists/setRemove methods of Bucket did not check if 'get' sub-request had thrown exception. This cause segfault, if operation executed on keys which do not exist.
* PCBC-453: verify that ClusterManager supports ephemeral buckets
* PCBC-451: add RBAC support in \Couchbase\PasswordAuthenticator class (Couchbase Server 5.x feature).
* PCBC-440: add experimental support of extended attributes for subdocument operations.

PHP Couchbase Extension 2.3.1

* PCBC-459: restore \Couchbase\Bucket::unlock() method, which has been lost in refactoring
* PCBC-460: prefer managed strings to persistent when storing document values.
* PCBC-461: deallocate intermediate results when using encoder compression
* PCBC-462: replace new lines in log entries with space
* PCBC-464: fix NumericRangeFacet with NULL boundary on PHP 5.4
* PCBC-463: fix incorrect reference counting on Search API. (might lead to segfaults and leaks)
* PCBC-465: check encoded ViewQuery before sending to libcouchbase
* PCBC-467: intermediate values in Datastructures API might leak. (e.g. result of internal "get" to find out size of the list)
* PCBC-469: implement SearchQuery->sort() function to support sorting FTS results, which is accessible in Couchbase Server 4.6+
* PCBC-471: fixed issue, when the library always use credentials for the first bucket in Authenticator.
* PCBC-441: add experimental support of Analytics query. https://developer.couchbase.com/documentation/server/4.5/analytics/introduction.html

This is the GA release of the 2.2.4 SDK.

It is major release with the following fixes and features:

* PCBC-443: Remove PCS dependency and rewrite PHP stubs using Zend C API

* PCBC-382: Implement cluster-level authorization using ClassicAuthenticator

* Migrate API to \Couchbase namespace (old API still available on toplevel as aliases,
  see tests/AliasesTest.php)

* PCBC-383: Cross-bucket joins for N1QL (see examples/api/couchbase.N1qlQuery.crossBucket.php)

* Refresh API documentation, describe all input options, put everything into single file
  (see api/*.php), and prepare them for PHPStorm (JetBrains/phpstorm-stubs#180)

* PCBC-386: Implement Datastructures API: List, Set, Map and Queue (see tests/DatastructuresTest.php)

* Improve connection management, persistent connections by default, track and close idle connections.

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

This is the GA release of the 2.2.3 SDK.

It is a maitenance release with several fixes:

Fixes:
* PCBC-389: deserialize legacy docs as JSON with falling back to old behaviour
* PCBC-428: use correct exception when credentials missing for CouchbaseClusterManager
* Documentation updates and bug fixes