sk-core

sk-core is used at run time in 5 crates.

Depender (with downloads and own rev deps)			sk-core version
150		skctl		^1.0.1
150	3	sk-store		^1.0.1
100		sk-tracer		^1.0.1
100		sk-ctrl		^1.0.1
100		sk-driver		^1.0.1