Go packages for working with the Collada file format.

• go-collada/dom -- implements approx. 98.5% of the Collada 1.5 specification as Go-native data structures

• go-collada/imp-1.5 -- loads Collada 1.4.1 and 1.5 XML documents into the go-collada/dom data structures

• go-collada/conv-1.4.1-to-1.5 -- in-memory conversion of Collada 1.4.1 XML documents to 1.5