fix: update Google Test to 1.9 (#191)

fix: compile with recent boost (clang/gcc) (#189)

docs: fix some type mistakes (#187)

fix: CHAR_WIDTH -> CHAR_SIZE to avoid collision with ISO/IEC TS 18661-1:20… (#184)

fix: license copypaste (#179)

chore: add license again

version: bump - 1.9.0

feat: ok, let it be an abstraction

feat: optionally check whether file exists

chore: add more tests

version: bump - 1.8.0

feat: fast gmtime and localtime replacement

feat: add missing overflow policies compositors

version: bump - 1.7.0

feat: add builder for asynchonous sink