2020-04-26

Bugfix release with minor new features.

Added

• Support logging of std::optional
• binlog/char_ptr_is_string.hpp: treat char* as string if included
• Example of using TSC as log clock

Fixed

• Fix overflow in ticksToNanoseconds
• Use -Wshadow on supporting compilers, fix warnings
• Do not call memcpy with null, even if size is 0
• Fix interaction with non-conforming libc++ bool vector