dev v20190608.1

Continuous integration build 682.

First build of (unstable) branch dev released from Azure Pipelines. Based on Superbuild v20190607.4.

Key changes since v0.8:

• Qt 5.12.3.
• New OCD export (version 8-12, including georeferencing).
• Experimental support for OCD 2018 import.
• New geospatial vector data export.

All changes since v0.8.4