Compare client/server versions and warn if different

src/daemon/main.cr

@@ -8,8 +8,16 @@ require "docr"
 require "kemal"
 require "uuid"
 
+macro version
+  "{{ `grep version shard.yml | cut -d: -f2` }}".strip()
+end
+
 get "/" do |env|
   env.redirect "/index.html"
 end
 
+get "/version" do
+  "#{version}"
+end
+
 Kemal.run