Release 1.6.0

This is a bugfix release with only minor changes.

Changes:

• The osm2pgsql-replication script which has been included in the osm2pgsql repository for a while will now be installed together with its man page on “make install”. To use it you need Python3, psycopg2 (or psycopg3), and PyOsmium installed. See the manual for details.
• Ignore relations with more than 32.000 members (which should never happen in real data) instead of failing.
• Removed the dependency on boost::algorithm.
• Included libosmium was updated to newest version 2.17.3 which contains an important fix for a problem which can lead to osm2pgsql locking up.

Note that this is the last version which will compile with C++14. The next version 1.7.0 will need C++17. (We have postponed the switch to C++17, because we wanted to get these bug fixes out early.)