fix: add explicit nullable type hints for PHP 8.4 compatibility #215
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- mg_api_last_error(): string $error -> ?string $error - mg_dump_headers(): array $headers -> ?array $headers PHP 8.4 deprecated implicit nullable parameter types. Parameters with null default values must now use explicit ? syntax. Fixes mailgun#213
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PHP 8.4 deprecated implicit nullable parameter types. Parameters with null default values must now use explicit ? syntax.
Fixes #213