Add reason and status constants to disputes

lib/Dispute.php

@@ -28,6 +28,37 @@ class Dispute extends ApiResource
     use ApiOperations\Retrieve;
     use ApiOperations\Update;
 
+    /**
+     * Possible string representations of dispute reasons.
+     * @link https://stripe.com/docs/api#dispute_object
+     */
+    const REASON_BANK_CANNOT_PROCESS       = 'bank_cannot_process';
+    const REASON_CREDIT_NOT_PROCESSED      = 'credit_not_processed';
+    const REASON_CUSTOMER_INITIATED        = 'customer_initiated';
+    const REASON_DEBIT_NOT_AUTHORIZED      = 'debit_not_authorized';
+    const REASON_DUPLICATE                 = 'duplicate';
+    const REASON_FRAUDULENT                = 'fraudulent';
+    const REASON_GENERAL                   = 'general';
+    const REASON_INCORRECT_ACCOUNT_DETAILS = 'incorrect_account_details';
+    const REASON_INSUFFICIENT_FUNDS        = 'insufficient_funds';
+    const REASON_PRODUCT_NOT_RECEIVED      = 'product_not_received';
+    const REASON_PRODUCT_UNACCEPTABLE      = 'product_unacceptable';
+    const REASON_SUBSCRIPTION_CANCELED     = 'subscription_canceled';
+    const REASON_UNRECOGNIZED              = 'unrecognized';
+
+    /**
+     * Possible string representations of dispute statuses.
+     * @link https://stripe.com/docs/api#dispute_object
+     */
+    const STATUS_CHARGE_REFUNDED        = 'charge_refunded';
+    const STATUS_LOST                   = 'lost';
+    const STATUS_NEEDS_RESPONSE         = 'needs_response';
+    const STATUS_UNDER_REVIEW           = 'under_review';
+    const STATUS_WARNING_CLOSED         = 'warning_closed';
+    const STATUS_WARNING_NEEDS_RESPONSE = 'warning_needs_response';
+    const STATUS_WARNING_UNDER_REVIEW   = 'warning_under_review';
+    const STATUS_WON                    = 'won';
+
     /**
      * @param array|string|null $options
      *