Previously, only a check on an existing XML-ID which is not coming from exportation
was done, but now we check that the XML-ID is the exact one. With this, we avoid
that the same record changed their XML-ID and thus, there's no more link between
them.
With this option, you can select which fields do you want to compare for updating.
Use case: you have specific accounts in taxes, and you don't want to lose them,
but you want to update their groups through the wizard. Before this, the update
was all or nothing. Now, you have total control!
* Compare all fields from template
Not all fields were properly compared with previous code. This means also
to exclude some of them, but now we have a full and extensible system.
* Optimize cached method
* Generate accounts and fiscal positions using Odoo methods (tax already did)
* README by fragments
* Add tests up to full coverage
