Bump minor version.

Author: ioquatix

lib/protocol/rack/version.rb

@@ -5,6 +5,6 @@
 
 module Protocol
 	module Rack
-		VERSION = "0.19.0"
+		VERSION = "0.20.0"
 	end
 end

readme.md

@@ -21,6 +21,10 @@ Please see the [project documentation](https://socketry.github.io/protocol-rack/
 
 Please see the [project releases](https://socketry.github.io/protocol-rack/releases/index) for all releases.
 
+### v0.20.0
+
+  - Convert header values into strings using `to_s` so that `Headers#each` can yield non-string values if necessary.
+
 ### v0.19.0
 
   - Use `Headers#add` instead of `Headers#[]=` in Rack3 and Rack31 adapters, which is the correct interface for appending headers.

releases.md

@@ -1,6 +1,6 @@
 # Releases
 
-## Unreleased
+## v0.20.0
 
   - Convert header values into strings using `to_s` so that `Headers#each` can yield non-string values if necessary.