n18map

n18map is used at run time in 8 crates.

Depender (with downloads and own rev deps)			n18map version
	2	n18io		^0.1.0
	1	n18ui		^0.1.0
	1	n18example		^0.1.0
	6	n18route		^0.1.0
	1	navig18xx		^0.1.0
	4	n18game		^0.1.0
	3	n18brush		^0.1.0