toggle crosshair visibility for for all mapviews, selected mapviees, single map canvases

added logging
TsvMapCanvas.setshowCrosshair + context menu actions related to this

static CrosshairDialog.getCrosshairStyle(*args, **kwds)

crosshair can show the pixel boundaries of underlying top-most raster layer

added logging
removed "findAbsolutePath"

added logging
added fileSizeString(num)
added SpatialPoint(QgsPoint)
added filterSubLayers(filePaths, subLayerEndings) and getSubLayerEndings(files)

added ImageDateParserSentinel2

class ImageDateParser to be inherited by data-set specific date-time-group parsers
class ImageDataParserLandsat(ImageDateParser) to extract date-time-groups from Landsat like data-sets (SceneID / ProductID)

faster TSD loading initialization
removed "mask" column in TimeSeriesTable model
added debugstatus.ui

make::createFilePackage
auto-generated test file package __init___.py