Merge pull request #14 from sheygs/fix-metadata-datatype

fix(type update): Transaction metadata type  from `number` to `Record`

Author: tekpriest

src/transaction/interface.ts

@@ -96,7 +96,7 @@ export interface Transaction {
   status: string;
   reference: string;
   domain: string;
-  metadata: number;
+  metadata: Record<string, unknown>;
   gateway_response: string;
   message?: string;
   channel: string;