sh: Add default open script

Simple wrapper for xdg-open functionality. Simply refers
to xdg-open except if there exists mimeo on the system
which it will refer to instead.

So, a simple preference modificator for mimeo over
xdg-open since that is my preference too.

Also gave it a short name so I can do open whenever I
want and don't have to tax my left hand with tying xdg.

qutebrowser/scripts/recently-downloaded

@@ -93,9 +93,9 @@ if [ "${#entries[@]}" -eq 0 ]; then
 	die "Download directory »${DOWNLOAD_DIR}« empty"
 fi
 
-line=$(printf '%s\n' "${entries[@]}" \
-	| crop-first-column \
-	| $ROFI_CMD "${ROFI_ARGS[@]}") || true
+line=$(printf '%s\n' "${entries[@]}" |
+	crop-first-column |
+	$ROFI_CMD "${ROFI_ARGS[@]}") || true
 if [ -z "$line" ]; then
 	exit 0
 fi
@@ -111,4 +111,8 @@ fi
 
 msg info "Opening »$line« (of type $filetype) with ${application%.desktop}"
 
-xdg-open "$path" &
+if type open >/dev/null 2>&1; then
+	open "$path" &
+else
+	xdg-open "$path" &
+fi