Allow trailing slashes in seed API

src/api.ts

@@ -14,8 +14,9 @@ export async function get(
     query[key] = val.toString();
   }
 
+  const base = config.seed.api.replace(/\/$/, "");
   const search = new URLSearchParams(query).toString();
-  const baseUrl = `${config.seed.api}/v1/${path}`;
+  const baseUrl = `${base}/v1/${path}`;
   const url = search ? `${baseUrl}?${search}` : baseUrl;
 
   let response = null;

src/config.ts

@@ -129,7 +129,7 @@ export class Config {
   withSeed(seed: string): Config {
     const cfg = {} as Config;
     Object.assign(cfg, this);
-    cfg.seed.api = seed;
+    cfg.seed.api = seed.replace(/\/$/, "");
 
     return cfg;
   }