Mapbender Starter v3.0.8.3, PostgreSQL 10 edition

This version pre-bundles an updated doctrine/dbal package with full support for PostgreSQL server 10. This fixes errors when running doctrine schema migrations with PostgreSQL 10 hosting the primary default database.
The updated doctrine/dbal package, and by extension this entire package, requires at least PHP7.1 to work.

This package is otherwise identical to v3.0.8.3, which is still functional with PHP5.4.