Uri(...).withQuery("a" -> "POST /api") Not Encoding `/` in `/api`

[Kevin Meredith]

scala> Uri("http://a.b.c/a").withQuery("a" -> "POST /api")

res2: spray.http.Uri = http://a.b.c/a?a=POST+/api

Shouldn't the slash in front of 'api' be encoded with `%2F`?

Example:

scala> java.net.URLEncoder.encode("POST /api", "UTF-8")

res6: String = POST+%2Fapi

[André]

Slashes in Queries should be OK. See https://tools.ietf.org/html/rfc3986#section-3.4.