3.2.0

• Fixed an issue where template functions were not accessible from extensions.
• Fixed an issued with the URI extension throwing errors when it shouldn't.
• Added the ability to get all template data by calling $template->data().
• Added the ability to render a template via the toString() magic method.
• Added the ability to run the tests using composer test.
• Improvements to error handling when rendering templates.
• Various coding style, CI and documentation improvements.