Set up aerc to do url scans

- Add a 'u' bind in message view to fire urlscan
- Set PAGER to "most -w" to auto-wrap lines

.zshrc

@@ -30,7 +30,7 @@ export QT_QPA_PLATFORMTHEME=qt5ct
 
 # most does not exist on every system I touch
 if [[ -a /usr/bin/most ]]; then
-    export PAGER=most
+    export PAGER="most -w"
 fi
 
 # Key binds