clipper.export.h: added exported Triangulate functions

plus significant update to DLL test applications

clipper.export.h: added exported Triangulate functions

plus significant update to DLL test applications

Release version 1.5.4

Release version 1.5.4

Release version 1.5.3

Release version 1.5.3

Version 1.5.2

InflatePaths function (C# only) - added missing arcTolerance parameter.

Updated clipper.export.h documention.

Release version to 1.4.0

Fixed a minor syntax error tripping some C++ compilers