Add nnbsp support.

This has been discussed on the issue #193 of the wincompose project

see.: samhocevar/wincompose#193

Author: wget

dotXCompose

@@ -96,6 +96,8 @@ include "%L"
 #<Multi_key> <space> <minus>		: "‑"	U2011		# NON-BREAKING HYPHEN
 # Already present for me:
 # <Multi_key> <space> <space>		: " "	U00A0		# NO-BREAK SPACE
+# Narrow no-break space, needed for some Latin languages like French
+<Multi_key> <space> <n> : " "    U202f # NARROW NO-BREAK SPACE
 # Do we want/need these?
 <Multi_key> <d> <a> <g>			: "†"	U2020		# DAGGER
 <Multi_key> <d> <d> <a> <g>		: "‡"	U2021		# DOUBLE DAGGER