V5668
- Update PDFium to branch 5668
- Update EMSDK to version 3.1.34
- Add my other projects to README:
- XPLPC - Cross Platform Lite Procedure Call: https://github.com/xplpc/xplpc
- Nativium - C++ Multiplatform Modular Toolkit Template: https://github.com/nativium/nativium