Fix dialyzer warnings

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Add questions section
 - Change default `@eb_tme_unit` to `:microsecond`
 - Change all instances of `micro_seconds` and `microseconds` to `microsecond`, as per Erlang 19+
+- Fix dialyzer warnings
 
 ## [1.3.X]
 

lib/event_bus/managers/observation.ex

@@ -77,7 +77,7 @@ defmodule EventBus.Manager.Observation do
   @doc """
   Create an watcher
   """
-  @spec create(tuple()) :: no_return()
+  @spec create(tuple()) :: :ok
   def create({listeners, {topic, id}}) do
     GenServer.call(__MODULE__, {:save, {topic, id}, {listeners, [], []}})
   end

lib/event_bus/services/notification.ex

@@ -25,7 +25,9 @@ defmodule EventBus.Service.Notification do
 
   @spec notify_listeners(list(), tuple()) :: no_return()
   defp notify_listeners(listeners, event_shadow) do
-    for listener <- listeners, do: notify_listener(listener, event_shadow)
+    Enum.each(listeners, fn listener ->
+      notify_listener(listener, event_shadow)
+    end)
   end
 
   @spec notify_listener(tuple(), tuple()) :: no_return()

mix.exs

@@ -26,8 +26,13 @@ defmodule EventBus.Mixfile do
     [extra_applications: [:logger], mod: {EventBus.Application, []}]
   end
 
-  defp elixirc_paths(:test), do: ["lib", "test/support"]
-  defp elixirc_paths(_), do: ["lib"]
+  defp elixirc_paths(:test) do
+    ["lib", "test/support"]
+  end
+
+  defp elixirc_paths(_) do
+    ["lib"]
+  end
 
   # Dependencies can be Hex packages:
   #