added WCS support
added TimeSeriesDataSource
allows to use multiple source per TSD

avoids QgsMapCanvas() calls without any parent = None, which caused crashes on macOS

fixed import of ENVI spectral libraries

refactoring
added timeseriesviewertesting and moved tests to

timeseriesviewer/__init__.py: loads QGIS resources on start (for dev environments), added workaround for PyQtGraph issue 774,
timeseriesviewer/__main__.py refactored

mapvisualization.py fixed renderer export

added resourcemockup.py

utils.py improved qgis app initialization, added QgsPythonRunner implementation (for testing)

metadata.txt, pb_tool.cfg, make/deploy.py: refactoring, qgis min/max version by QGIS_MIN / QGIS_MAX

speclib + temporal profile layers invisible to QGIS (for security reasons)

fixed Temporal profile expression evaluation

added default spectrum for spectral libraries

improved speclib CSV export

refactoring MapView dock

fixed umlaut problem

profile visualization: fixed TP loading status, added TP ContextMenu