Hi,

There are many "repair" schemas in use. One is `repair=yes|no|only|brand|only_sold` which is widely used to indicate if a shop does repairs.

However, `repair=` has also been used to indicate various items which are replaced at the given location.

The second is `<item>:repair`, which already is in de-facto use.

The third is `service:<item>:repair` which is also widely used and is supported by the iD editor.

This changeset changes `repair=<item*>` into `<item>:repair=yes`.

I'm in favour of unifying `service:<item>:repair` and `<item>:repair` too, but those should go through discussion first.

Note that all three schemes were documented in the wiki, but at different locations; I'm unifying them under https://wiki.openstreetmap.org/wiki/Key:repair