The public API of Predis\Client will be compatible with older releases, but many of the core internal classes are going to change.
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+*** ATTENTION ***
+
+The library code in this branch is currently undergoing a major rewrite and it
+is marked as UNOPTIMIZED, HIGHLY UNSTABLE and will most likely FAIL from time
+to time. The internal API is still subject to frequent changes since its
+design has not been fully finalized yet.
+Feedback is obviously appreciated, but use it at your own risk!