Remove Mojo::IOLoop in test

`generate_port` is gone.  Fixes #1.

Signed-off-by: Zak B. Elep <zakame@zakame.net>
Migrate to Minilla

Dist::Milla could not work for some reason, so all the more the need to
move to a simpler build system :)

Signed-off-by: Zak B. Elep <zakame@zakame.net>
Checking in changes prior to tagging of version 2.03.

Changelog diff is:

diff --git a/Changes b/Changes
index bcab783..1f34b45 100644
--- a/Changes
+++ b/Changes
@@ -3,6 +3,10 @@ MojoX-Renderer-WriteExcel)

 {{$NEXT}}

+2.03 2014-12-08T10:05:37Z
+        Remove use of Mojo::IOLoop for test, Closes #1
+        Switch build to Minilla
+
 2.02    2013-08-17
         Fix output format to work on newer Mojo
         Switch build to Dist::Milla