Bitget V1 API deprecation notice

[tiagosiebler]

For anyone still using the V1 APIs, the V1 APIs are going offline on November 28. Announcement here: https://www.bitget.com/support/articles/12560603838361

Copied announcement for convenience:

As part of our product architecture upgrades and strategic business adjustments, we will officially discontinue external access to the V1 API on November 28, 2025. From that date, the V1 API will no longer support any requests, including:
Spot trading: RestAPI, WebSocket API
Futures trading: RestAPI, WebSocket API
Margin trading: RestAPI, WebSocket API
Copy trading: RestAPI

To ensure business continuity and avoid service disruptions or potential financial losses, we strongly recommend completing API upgrades, data migration, or system modifications before November 28, 2025. For migration guidance, integration support, or technical documentation, please refer to our official API docs or contact our technical support team.

Refer to the readme and examples folder for guidance on using the V2 and V3 API offerings with this Node.js/JavaScript/TypeScript SDK for Bitget.

[tiagosiebler]

The V1 APIs have been offline for some time now, and we've fully removed support for all V1 APIs as of #114. Time to close this one.