[pydgin] add SparseMemoryImage
[pydgin] add SparseMemoryImage

futurecore/pydgin,futurecore/pydgin,futurecore/pydgin,futurecore/pydgin,moreati/pydgin,moreati/pydgin,cornell-brg/pydgin,cornell-brg/pydgin,moreati/pydgin,moreati/pydgin,cornell-brg/pydgin,cornell-brg/pydgin