sk-core

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

Depender (with downloads and own rev deps)			sk-core version
250	3	sk-store		^1.1.1
240		skctl		^1.1.1
240		sk-tracer		^1.1.1
240		sk-ctrl		^1.1.1
240		sk-driver		^1.1.1