I18n deployments

This page is a proof of concept how we would go with notifying users about new (i18n) changes and of the new deploy schedule.

When changes come in /1.20wmfNN subpages are updated. When a new branch is created, we can take that list and send it to mediawiki-i18n (and other places) and tell them to have a look at this page for deployment schedules. The changes deployed in the first and second week of each are usually the same. If something changes, a note is added about the differences in following deployments of the same cycle.

All regular deployments happen between XX-ZZ UTC.