Utfcpp Versions Save

The release contains the fix the inclusion of both cpp11 and cpp17 headers on C++17 compilation. Also some additional tests for using string literals and string objects with modern compilers.

Shout out to: @RT222 for providing the fix.

Optional support for C++ 17 std::string_view.

Contributors to the release: Rémy Tassoux @fu7mu4

Fix for Issue #72.

Include the commits from the previous year.

Thanks to the contributors: @gibbed , @Flamefire , @AkiraMiyakoda , @tvanriper , @xantares

This release adds one new API call: unchecked::replace_invalid().

Other changes are mostly about testing and installation.

A minor release that contains fix for Issue #31 Program fails to link when including utf8.h in multiple files.

Thanks @klusark for reporting the bug.

This minor release contains:

• Fix of the project version number at CMakeLists.txt
• Continuous Integration with Google Tests and CircleCI

A minor release with a fix for a header guard.

Fix for issue #27 : Inconsistent header guards (cpp11.h)

This is a major release that introduces the following functionality:

1. New convenience API for C++ 11 and later compilers. The library still works with C++ 98/03 compliant compilers, just without the new functions.
2. advance() function works in both directions.

The following deprecated functions were removed:

1. previous() - deprecated since version 1.02.
2. is_bom() - deprecated since version 2.3.

Thanks to the contributors:

• @glebm
• @AkiraMiyakoda
• @Al2Klimov

Various build and test fixes. No changes to the core library code.