Merge pull request #23 from Skookum/Development

Updating the version of DoNetStandard
Merge pull request #24 from Skookum/Development

Remove Change log
Removed Abilitychildren in preparation of tree data structure
Added a new cannot method and added some tests for coverage
Changed to use tree structure
Added ability hierarchy support
Merge pull request #33 from Skookum/Development-ComplexAbilities

Development complex abilities