Merge branch 'feature/qgis3' into develop

__init__.py

example/Images/__init__.py

example/__init__.py

example/inmemorydatasets.py

make/bak_deploy.py

make/createtestdata.py

make/deploy.py

make/iconselect.py

make/make.py

metadata.txt

pb_tool.cfg

test/__init__.py

test/collapsibleGroupBox.py

test/output.vrt

test/qgis_interface.py

test/test_init.py

test/test_mapcanvas.py

test/test_mapvisualization.py

test/test_pixelloader.py

test/test_plotstyling.py