Aimy Sitemap v38.0 comes with its own debugging mode and improves special character handling in URLs.
Debugging Mode
Until v37.0 Aimy Sitemap could be put into debugging mode only by enabling the "System: Debug" option in Joomla!'s "Global Configuration". Now Aimy Sitemap can be put into debugging mode on its own independently as well (see "Options" → "Enable Debugging Mode" in "Aimy Sitemap" tab).