Results 3 issues of Ryo Kajiwara

It seems like the returned Mail::Body instance from Mail::Message#body always uses the default charset `US-ASCII` regardless of the `Content-Type` header in the original message. ![mail-body-charset-notated](https://user-images.githubusercontent.com/809530/93010587-2834c500-f5c9-11ea-9355-8816884f077e.png) Is this behavior intended? If...

## 再現コード ```cpp #include "../all.h" void f(const int &){ std::cout

# Rationale `Antikythera.Http.SetCookie` lacks the option to set the `SameSite` attribute of `Set-Cookie` header, and now it is forced into using `SameSite=Lax`. As my team and I came across a...