When I Set session = null, signed Cookied hasn't been remove

[CoderIvan]

From Example:

When I visit [http://localhost:3000/get](), I get two cookies:

But When I visit [http://localhost:3000/remove](), there koa.sid.sig hasn't been remove

[CoderIvan]

https://github.com/koajs/generic-session/blob/master/lib/session.js#L97

I think the code this.cookies.set(key, null) should be changed to this.cookies.set(key, null, {signed: cookie.signed})

[dead-horse]

there is a PR working on this: https://github.com/koajs/generic-session/pull/74/files

[CoderIvan]

Thanks