Stable Release v2.1

Choose correct version and put dll into InterfacePlugins folder.

This is a major version update. It brings more options about exporting obj file especially the encoding system. This exporter has not been tested more so far. Please submit an issue if you encounter any problems while using it. There are major changes:

• Use std::string instead of pre-allocated buffer(buffer_helper.cpp)
• Add full encoding conversion system for correcting exported files. This is was designed for solving #1 . There are several options for this system. MAKE SURE to read the README file before actually exporting.
• Add o cmmand and g command switch.
• Reduce the IO operation about copying texture files.
• Remove useless usemtl command.
• etc...

Full Changelog: v1.7...v2.1