Update .travis.yml

fix zibal gateway 500 response (#292)

Switch to cURL for API requests in Zibal driver (#283)

* Switch to cURL for API requests in Zibal driver

Replaced the HTTP client code with cURL to handle API requests for the Zibal payment gateway. The change aims to streamline the request process, encapsulating the data and headers setup within the cURL functions.

* Refactor Zibal verification to use cURL instead of client

This change removes the client object and switches to using cURL for handling the payment verification process. The updated implementation uses direct cURL functions to set the request parameters and handle the response, streamlining the verification process. Additionally, the `orderId` variable was removed as it was unused.

Apply fixes from StyleCI (#279)

Co-authored-by: StyleCI Bot <[email protected]>

[Chore] Update Zarinpal Sandbox URLs and Refactor API Integration (#277)

* chore: update zarinpal sandbox urls in config

* refactor: replaced SOAP with REST API in Zarinpal Sandbox strategy

* styles: fix code styles

* styles: fix code styles

Fix parspal driver (#274)

* Fix cache expiration in parspal driver

* Add parspal driver to class maps in config

Add parspal driver (#273)

Fix shepa driver (#271)

Fix Request class return types (#269)

Apply fixes from StyleCI (#262)

Co-authored-by: StyleCI Bot <[email protected]>