htsn-import-0.2.0: doc/CHANGES.database

Any database changes requiring manual intervention will be mentioned
here. These should always be accompanied by a medium-version bump.

0.1.3 -> 0.2.0
--------------

The newsxml teams now have an "id" attribute, which means that we can
link each news entry to the common "teams" table rather than using a
custom "news_teams".

The migration will work automatically, creating a news__teams join
table, but the two old tables will still be left behind: news_teams
and news__news_teams. These can safely be deleted:

  DROP TABLE news_teams;
  DROP TABLE news__news_teams;