fix url-quote-magic not working issue

Incompatibilites between 5.0.8 and 5.1:
bracketed-paste-magic may also be necessary in order to apply url-quote-magic.

Reference: 
a9df6aaa70/Functions/Zle/url-quote-magic (L11)

lib/misc.zsh

@@ -1,6 +1,10 @@
 ## Load smart urls if available
 for d in $fpath; do
 	if [[ -e "$d/url-quote-magic" ]]; then
+		if [[ -e "$d/bracketed-paste-magic" ]]; then
+			autoload -Uz bracketed-paste-magic
+			zle -N bracketed-paste bracketed-paste-magic
+		fi
 		autoload -U url-quote-magic
 		zle -N self-insert url-quote-magic
 	fi