WG2 2.0

• Use directed graphs now
• Deleted tsc and tn because they are not needed now
• Use ReadOnlySpan in some parts to improve perfomance

(version is 2.X now because tn and tsc are deleted now, new version is not fully compatible with older)

WG2 1.1

moved interface to CAI
now tr chance require double value from 0 to 1

WG2 1.0

First release