message: Add UI for TMX import/export
diff: B28F1CCB16F629D30018AF7E /* manager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = manager.h; sourceTree = "<group>"; };
  B28F1CCC16F629D30018AF7E /* macos_helpers.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = macos_helpers.h; sourceTree = "<group>"; };
  B28F1CCD16F629D30018AF7E /* macos_helpers.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = macos_helpers.mm; sourceTree = "<group>"; };
  - B28F1CD016F629D30018AF7E /* prefsdlg.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = prefsdlg.cpp; sourceTree = "<group>"; };
  + B28F1CD016F629D30018AF7E /* prefsdlg.cpp */ = {isa = PBXFileReference; explicitFileType = sourcecode.cpp.objcpp; fileEncoding = 4; path = prefsdlg.cpp; sourceTree = "<group>"; };
  B28F1CD116F629D30018AF7E /* prefsdlg.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = prefsdlg.h; sourceTree = "<group>"; };
  B28F1CD216F629D30018AF7E /* progressinfo.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = progressinfo.cpp; sourceTree = "<group>"; };
  B28F1CD316F629D30018AF7E /* progressinfo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = progressinfo.h; sourceTree = "<group>"; };
  