exec-target

It's used only as a dev dependency in 11 crates.

Depender (with downloads and own rev deps)			exec-target version
	1	aki-xtee	dev	^0.2
	1	aki-stats	dev	^0.2
	1	aki-mcolor	dev	^0.2
	1	aki-gsub	dev	^0.2
	1	aki-mline	dev	^0.2
	1	aki-resort	dev	^0.2
	1	aki-xcat	dev	^0.2
	1	aki-unbody	dev	^0.2
	1	aki-mcycle	dev	^0.2
		aki-json-pick	dev	^0.2
		ps-mem	dev	^0.2