README: Add Sewer client
@ -266,6 +266,7 @@ header_name = "X-Forwarded-For"
## Clients
- acme.sh: [https://github.com/Neilpang/acme.sh](https://github.com/Neilpang/acme.sh)
- Sewer: [https://github.com/komuw/sewer](https://github.com/komuw/sewer)
### Authentication hooks
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