- added MapCanvasLayerModel, MapCanvas.Command, multi-raster-layer support
- implemented refresh pipeline for timed updates
- QMenu shows Crosshair visibility, fixed some api bugs
- added setSpatialExtent, setSpatialCenter
- spatialExtentHint considers all layers

TimeSeriesViewer:
- added showTimeSeriesDatum fpor scrolling to TSD of interest

TimeSeries + TimeSeriesTableModel + panel:
- support multiple raster per date
- QSortProxyModel allows sorting

utils.py
- added some more TestObject functions

make.py
- resource.py compilation is now python-only.
refactoring + docstrings

refactoring
added timeseriesviewertesting and moved tests to

Crosshairs: refactoring, unified per mapview, position remains on position of last mouse-click (closes issue #12)

startet implementatino of stackedbandinput dialog and required classes

added test/collapsibleGroupBox (idea: find a way to use QGIS resource icons without having QGIS started)

first steps to change MapViewCollection UI

added __main__.py (in progress)
added option to load center pixel automatically