[Therion] version 5.3.10 to download

New in version 5.3.10: therion: * full OSGB grid coverage (e.g. cs OSGB:ST) * added New Zealand symbol set (NZSS, thanks to Bruce Mutton) * updated UIS symbol set (thanks to Bruce Mutton) * updated English translation (thanks to Bruce Mutton) * added te reo Maori translation (thanks to Kyle Davis) * bugs fixed: xtherion: * bugs fixed: loch: * added checkbox that enables/disables surface lighting (Scene->Surface) * bugs fixed: