v2.0.3

What's Changed

• upgrade ipay88 signature encryption from SHA256 to HMAC-SHA512 by @GuangYouLee in #1
• upgrade SHA256 to HMAC-SHA512 by @GuangYouLee in #2

New Contributors

• @GuangYouLee made their first contribution in #1

Full Changelog: v2.0.2...v2.0.3