v6.4.3

Changes

GeopackageExport plugin

• #26: fix to ensure default file extension for output file is "gpkg"
• #27: fix for failure to trap lack of Horizon output layer name on Windows
• #28: fix for survey box export toggle
• #29: fix detection of anchor point based x-y coordinate system - only support projected CRS
• #30: fix spatial reference system table issues by adding EPSG code to CRS information
• #31: explicitly initialise pointers to nullptr for Windows to fix crash on Horizon tab
• #32: add export of well tracks and markers
• #33: add option to export well marker depths in feet