utf8 cpp library
Release 2.2.3

This is a bug fix release that improves converting from utf-16 to utf-8 error detection.

Changes from version 2.2.2
- Bug fix [2852872]	invalid utf16 strings were parsed without any error
- Bug fix [2857456]	redundant checks in append in checked.h

Files included in the release: utf8.h, core.h, checked.h, unchecked.h, utf8cpp.html, ReleaseNotes