Allow seed version to be used in queries

seed-version.diff

diff --git a/src/base/registrations/registrar.ts b/src/base/registrations/registrar.ts
index 6ed987c..2723a5a 100644
--- a/src/base/registrations/registrar.ts
+++ b/src/base/registrations/registrar.ts
@@ -142,7 +143,11 @@ export async function getSeed(name: string, config: Config, resolver?: EnsResolv
     resolver.getText('eth.radicle.seed.api'),
   ]);
 
-  return new Seed(config, host, id, git, api);
+  const seed = new Seed(config, host, id, git, api);
+  // Queries the seeds version and sets the version property
+  await seed.setVersion();
+
+  return seed;
 }
 
 export function registrar(config: Config): ethers.Contract {
diff --git a/src/base/seeds/Seed.ts b/src/base/seeds/Seed.ts
index c43e301..17d7f20 100644
--- a/src/base/seeds/Seed.ts
+++ b/src/base/seeds/Seed.ts
@@ -13,6 +13,7 @@ export class Seed {
   id?: string;
   git?: string;
   api?: string;
+  version?: string;
   config: Config;
 
   constructor(config: Config, host?: string, id?: string, git?: string, api?: string) {
@@ -43,4 +44,8 @@ export class Seed {
     const result = await getProjects(this.config);
     return result.map((project: any) => ({ ...project, id: project.urn }));
   }
+  async setVersion(): Promise<void> {
+    const result = await api.get('', {}, this.config);
+    this.version = result.version;
+  }
 }
diff --git a/src/config.json b/src/config.json
index fdc7b24..b870c50 100644
--- a/src/config.json
+++ b/src/config.json
@@ -76,7 +76,8 @@
       "host": "0.0.0.0",
       "api": { "port": 8777 },
       "link": { "port": 8776 },
-      "git": { "port": 80 }
+      "git": { "port": 80 },
+      "version": "0.2.0"
     }
   },
   "ipfs": { "gateway": "https://ipfs.io/ipfs/" },
diff --git a/src/config.ts b/src/config.ts
index 38594fc..4d79202 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -57,9 +57,10 @@ export class Config {
   };
   abi: { [contract: string]: string[] };
   seed: {
-    api: { host?: string; port: number };
-    git: { host?: string; port: number };
+    api: { host?: string; id?: string; port: number };
+    git: { host?: string; id?: string; port: number };
     link: { host?: string; id?: string; port: number };
+    version: string;
   };
   ceramic: {
    client: Core;
diff --git a/src/project.ts b/src/project.ts
index 8343cdb..c05cc94 100644
--- a/src/project.ts
+++ b/src/project.ts
@@ -95,7 +95,9 @@ export async function getTree(
   if (path === "/") {
     path = "";
   }
-  return api.get(`projects/${urn}/tree/${commit}/${path}`, {}, config);
+  return config.seed.version == "0.2.0"
+    ? api.get(`projects/${urn}/tree/${config.seed.link.id}/${commit}/${path}`, {}, config)
+    : api.get(`projects/${urn}/tree/${commit}/${path}`, {}, config);
 }
 
 export async function getBlob(
@@ -105,7 +107,9 @@ export async function getBlob(
   options: { highlight: boolean },
   config: Config
 ): Promise<Blob> {
-  return api.get(`projects/${urn}/blob/${commit}/${path}`, options, config);
+  return config.seed.version == "0.2.0"
+    ? api.get(`projects/${urn}/blob/${config.seed.link.id}/${commit}/${path}`, options, config)
+    : api.get(`projects/${urn}/blob/${commit}/${path}`, options, config);
 }
 
 export async function getReadme(
@@ -113,7 +117,9 @@ export async function getReadme(
   commit: string,
   config: Config
 ): Promise<Blob> {
-  return api.get(`projects/${urn}/readme/${commit}`, {}, config);
+  return config.seed.version == "0.2.0"
+    ? api.get(`projects/${urn}/readme/${config.seed.link.id}/${commit}`, {}, config)
+    : api.get(`projects/${urn}/readme/${commit}`, {}, config);
 }
 
 export function path(