Will Gu

Results 1 issues of Will Gu

https://github.com/chronoxor/FastBinaryEncoding/commit/5d98a626c6cc3ce9483dbe1c56551f0e60e3792b 2 issues 1. in this commit, the macro only checks for `FMT_VERSION`. but `ostream_formatter` is only introduced after fmt 9.0.0. So the generated code would fail with earlier version...