.. versionadded:: 7.1
Before version 7.1, report declaration could be done in two different ways:
either via a <report> tag in XML, or via such a tag and a class
instanciation in a Python module. Instanciating a class in a Python module was
necessary when a custom parser was used.
In version 7.1, the recommended way to register a report is to use only the
<report> XML tag. The tag can now support an additional parser
attribute. The value for that attibute must be a fully-qualified class name,
without the leading openerp.addons. namespace.
Note
The rational to deprecate the manual class instanciation is to make all reports visible in the database, have a unique way to declare reports instead of two, and remove the need to maintain a registry of reports in memory.