actix-router: v0.4.0

• When matching path parameters, %25 is now kept in the percent-encoded form; no longer decoded to %. #357
• Path tail patterns now match new lines (\n) in request URL. #360
• Fixed a safety bug where Path could return a malformed string after percent decoding. #359
• Methods Path::{add, add_static} now take impl Into<Cow<'static, str>>. #345