Release 1.0.20.
Release 1.0.20.

jscinoz/assetgraph,slang800/assetgraph,assetgraph/assetgraph,jscinoz/assetgraph,papandreou/assetgraph,slang800/assetgraph,papandreou/assetgraph,jscinoz/assetgraph,papandreou/assetgraph