Use master API again.

Author: gotthardp

rebar.config

@@ -6,7 +6,7 @@
 ]}.
 
 {deps, [
-    {lorawan_server_api, {git, "https://github.com/gotthardp/lorawan-server-api.git", {tag, "v0.3.0"}}},
+    {lorawan_server_api, {git, "https://github.com/gotthardp/lorawan-server-api.git", {branch, "master"}}},
     {lager, {git, "git://github.com/basho/lager.git", {tag, "3.2.4"}}},
     {jsx, {git, "https://github.com/talentdeficit/jsx.git", {tag, "2.8.2"}}},
     {cowboy, {git, "https://github.com/ninenines/cowboy", {branch, "master"}}},