phpredis 5.3.5

This release adds support for exponential backoff w/jitter, experimental support for detecting a dirty connection, as well as many other fixes and improvements.

• Fix typo in cluster_scan_resp (Michael Grunder)
• Fixed segfault in redis_setoption_handler (Pavlo Yatsukhnenko)
• Fix masters array in the event of a cluster failover (Bar Shaul)
• Fix 32 bit type error (Remi Collet)
• Fix radix character in certain locales (Pavlo Yatsukhnenko)
• ZSTD Validation fix (Michael Grunder)
• Remove superfluous typecast (Remi Collet)
• Minor fixes/cleanup (Pavlo Yatsukhnenko)
• Fix RedisArray constructor bug
• Use more appropriate array iteration macro (Pavlo Yatsukhnenko)
• Clean up session tests (Michael Grunder)
• RedisArray refactors (Pavlo Yatsukhnenko)
• Use zend_parse_parameters_none helper (Remi Collet)
• Support for various exponential backoff strategies (Nathaniel Braun)
• Added experimental support for detecting a dirty connection (Michael Grunder)
• Created distinct compression utility methods (pack/unpack) (Michael Grunder)
• SMISMEMBER Command (Pavlo Yatsukhnenko)