Migration of res.better.zip to new API
Use a Date field for dates
States have been dropped, put them again
Use the same xmlids than version 7.0

Otherwise the address will no longer be assigned to their zip code
Remap the xmlids who cannot be automatically mapped with the old one

Because the city name has changed.
I used this script https://gist.github.com/guewen/34fbc497297a1af0ca2f and a lot
of manual checks to choose the correct city+zip couples.
Add the zip that were present in 7.0 but do no longer exist

But put them as inactive so they are not deleted from the database
Remove the query that update records to be inactive

'init_xml' is deprecated, and anyway the records with a xmlids are removed from
the database when the module is upgraded and they are no longer in the xml. I
added the xml records back in the previous commit with active=False.
Add note about dependencies
Remove 'l10n_ch_zip_old'
Update copyrights
Add the banks which existed in 7.0 but set them inactive
Correct old xmlids: their module must be l10n_ch_bank and not l10n_ch