Remove Application.ensure_all_started(:ssl)

We already have `:ssl` in `:extra_applications`.

lib/tds/protocol.ex

@@ -423,7 +423,23 @@ defmodule Tds.Protocol do
   end
 
   defp ssl_connect(%{sock: {:gen_tcp, sock}, opts: opts} = s) do
-    {:ok, _} = Application.ensure_all_started(:ssl)
+    {ssl_opts, opts} =
+      case Keyword.pop(opts, :ssl, false) do
+        {false, opts} ->
+          {nil, opts}
+
+        {true, opts} ->
+          Logger.warning(
+            "setting ssl: true on your database connection offers only limited protection, " <>
+              "as the server's certificate is not verified. Set \"ssl: [cacertfile: \"/path/to/cacert.crt\"]\" instead"
+          )
+
+          # Read ssl_opts for backwards compatibility
+          Keyword.pop(opts, :ssl_opts, [])
+
+        {ssl_opts, opts} when is_list(ssl_opts) ->
+          {Keyword.merge(default_ssl_opts(), ssl_opts), opts}
+      end
 
     case Tds.Tls.connect(sock, opts[:ssl_opts] || []) do
       {:ok, ssl_sock} ->