2.0.0 Release (#58)

* Automated commit message

* Automated commit message

* add changelog

---------

Co-authored-by: PayPalServerSDKs <server-sdks@paypal.com>

doc/models/plan.md

@@ -12,7 +12,6 @@ The merchant level Recurring Billing plan metadata for the Billing Agreement.
 | Name | Type | Tags | Description | Getter | Setter |
 |  --- | --- | --- | --- | --- | --- |
 | `billingCycles` | [`BillingCycle[]`](../../doc/models/billing-cycle.md) | Required | An array of billing cycles for trial billing and regular billing. A plan can have at most two trial cycles and only one regular cycle.<br><br>**Constraints**: *Minimum Items*: `1`, *Maximum Items*: `3` | getBillingCycles(): array | setBillingCycles(array billingCycles): void |
-| `product` | `mixed` | Optional | Product details associated with any one-time product purchase. | getProduct(): | setProduct( product): void |
 | `oneTimeCharges` | [`OneTimeCharge`](../../doc/models/one-time-charge.md) | Required | The one-time charge info at the time of checkout. | getOneTimeCharges(): OneTimeCharge | setOneTimeCharges(OneTimeCharge oneTimeCharges): void |
 | `name` | `?string` | Optional | Name of the recurring plan.<br><br>**Constraints**: *Minimum Length*: `1`, *Maximum Length*: `127`, *Pattern*: `^[A-Za-z0-9() +',.:-]+$` | getName(): ?string | setName(?string name): void |
 
@@ -36,10 +35,6 @@ The merchant level Recurring Billing plan metadata for the Billing Agreement.
           "value": "value6"
         }
       },
-      "frequency": {
-        "key1": "val1",
-        "key2": "val2"
-      },
       "start_date": "start_date6"
     }
   ],
@@ -69,10 +64,6 @@ The merchant level Recurring Billing plan metadata for the Billing Agreement.
       "value": "value8"
     }
   },
-  "product": {
-    "key1": "val1",
-    "key2": "val2"
-  },
   "name": "name8"
 }
 ```