sceneInterface:link has now been broken down into sceneInterface:root, sceneInterface:fileName and sceneInterface:time in the LinkedScene, although the mechanism for writing a retimed link remains the same
changed the names of the link/time attributes in the LinkedScene
totally disabled time remapping for legacy linked scenes, plus fixed a typo/bug
fixed first time write bug
Made sceneInterface:link.time readable from all points in a LinkedScene Hierarchy
added unit test for nested time remapping
updated linked scene code
linked scene now only claims to have a sceneInterface:link.time attribute at link locations via hasAttribute()
Merge pull request #26 from davidsminor/linkedSceneLinkAttributes

sceneInterface:link has now been broken down into sceneInterface:root, sceneInterface:file and sceneInterface:time (which is always created even if not stored in the file)