Integrate Chagne by Yuke (Fix ToString methond in Type.cs to return a default type)
Merge pull request #136 from junmendoza/DefectFixBranch

Integrate Chagne by Yuke (Fix ToString methond in Type.cs to return a de...
Merge branch 'StableBranchWithTestcases' of https://github.com/lukechurch/designscript into StableBranchWithTestcases