Update docs

CHANGELOG.asciidoc

@@ -22,6 +22,7 @@ Added
 
 - New `:edit-url` command to edit the URL in an external editor.
 - New `network -> custom-headers` setting to send custom headers with every request.
+- New `{url:pretty}` commandline replacement which gets replaced by the decoded URL.
 
 Changed
 ~~~~~~~

README.asciidoc

@@ -173,10 +173,10 @@ Contributors, sorted by the number of commits in descending order:
 * John ShaggyTwoDope Jenkins
 * Jimmy
 * Peter Vilim
+* Panagiotis Ktistakis
 * Clayton Craft
 * Oliver Caldwell
 * Jonas Schürmann
-* Panagiotis Ktistakis
 * Jakub Klinkovský
 * skinnay
 * error800

doc/help/commands.asciidoc

@@ -655,7 +655,7 @@ Syntax: +:spawn [*--userscript*] [*--verbose*] [*--detach*] 'cmdline'+
 
 Spawn a command in a shell.
 
-Note the {url} variable which gets replaced by the current URL might be useful here.
+Note the `{url}` and `{url:pretty}` variables might be useful here. `{url}` gets replaced by the URL in fully encoded format and `{url:pretty}` uses a "pretty form" with most percent-encoded characters decoded.
 
 ==== positional arguments
 * +'cmdline'+: The commandline to execute.