Call load_callback for all includes, even cached (#703)

Fix #688: Support `#elifdef` and `#elifndef` (#691)

Fix #669: Manually included files are not reported missing by preproc…

…ess (#670)

improved test coverage of `simplecpp::Macro::expandHashHash()` (#665)

Fixed #591: Newline in #error message (#654)

Co-authored-by: William Jakobsson <william.jakobsson@cppcheck.com>

removed workarounds for Visual Studio conflicts with Cppcheck functio…

…ns with same names (#627)

improved `simplecpp::TokenList` constructors (#599)

avoid some unchecked pointer dereferences (#593)

test.cpp: do not unconditionally remove comments (#506)

fixed #562 - avoid potential redefinition of Windows-specific macros (#…

…563)