Change how Redis errors such as -ERR replies generates exceptions.

The "throw_errors" connection parameter has been removed and replaced by the
new "exceptions" client option since exceptions on -ERR replies returned by
Redis are not generated by connection classes anymore but are thrown by the
client class and other abstractions such as pipeline contexts.

This change does not affect much people using the Predis\Client class (aside
from the different configuration) but gives much more flexibility to those
building their own pieces of code around the internal classes of Predis.

lib/Predis/Protocol/Text/TextProtocol.php

@@ -44,7 +44,6 @@ class TextProtocol implements ProtocolInterface
     const BUFFER_SIZE = 4096;
 
     private $mbiterable;
-    private $throwErrors;
     private $serializer;
 
     /**
@@ -52,9 +51,8 @@ class TextProtocol implements ProtocolInterface
      */
     public function __construct()
     {
-        $this->mbiterable  = false;
-        $this->throwErrors = true;
-        $this->serializer  = new TextCommandSerializer();
+        $this->mbiterable = false;
+        $this->serializer = new TextCommandSerializer();
     }
 
     /**
@@ -115,9 +113,6 @@ class TextProtocol implements ProtocolInterface
                 return (int) $payload;
 
             case '-':    // error
-                if ($this->throwErrors) {
-                    throw new ServerException($payload);
-                }
                 return new ResponseError($payload);
 
             default:
@@ -136,10 +131,6 @@ class TextProtocol implements ProtocolInterface
             case 'iterable_multibulk':
                 $this->mbiterable = (bool) $value;
                 break;
-
-            case 'throw_errors':
-                $this->throwErrors = (bool) $value;
-                break;
         }
     }
 }