Remove config checks for params and session data

Since appsignal 2.2.13 (which includes
appsignal/appsignal-elixir#771 and
appsignal/appsignal-elixir#772), the app's
configuration is checked whenever parameters or session data is added to
the current span.

This patch updates the appsignal version dependency to 2.2.13 or higher,
and removes the duplicate checks from Appsignal.Plug.

Author: jeffkreeftmeijer

lib/appsignal_plug.ex

@@ -166,33 +166,21 @@ defmodule Appsignal.Plug do
   end
 
   defp set_params(span, conn) do
-    set_params(span, Application.get_env(:appsignal, :config), conn)
-  end
-
-  defp set_params(span, %{send_params: true}, conn) do
     %Plug.Conn{params: params} = Plug.Conn.fetch_query_params(conn)
     @span.set_sample_data(span, "params", params)
   end
 
-  defp set_params(span, _config, _conn) do
-    span
-  end
-
   defp set_sample_data(span, conn) do
     @span.set_sample_data(span, "environment", Appsignal.Metadata.metadata(conn))
   end
 
-  defp set_session_data(span, conn) do
-    set_session_data(span, Application.get_env(:appsignal, :config), conn)
-  end
-
-  defp set_session_data(span, %{send_session_data: true}, %Plug.Conn{
+  defp set_session_data(span, %Plug.Conn{
          private: %{plug_session: session, plug_session_fetch: :done}
        }) do
     @span.set_sample_data(span, "session_data", session)
   end
 
-  defp set_session_data(span, _config, _conn) do
+  defp set_session_data(span, _conn) do
     span
   end
 end

mix.exs

@@ -45,7 +45,7 @@ defmodule Appsignal.Plug.MixProject do
 
     [
       {:plug, ">= 1.1.0"},
-      {:appsignal, ">= 2.2.10 and < 3.0.0"},
+      {:appsignal, ">= 2.2.13 and < 3.0.0"},
       {:credo, "~> 1.2", only: [:dev, :test], runtime: false},
       {:dialyxir, "~> 1.0", only: [:dev, :test], runtime: false},
       {:ex_doc, "~> 0.21", only: :dev, runtime: false}