rename ContentStreamIO -> StreamContentIo | comments | cleanups
StreamContentIoPool and -Manager introduced
Contents: remove file extensions from ContentTypes | IoManager-Cleanups
Graph: add HasSingleEdge
cleanups, whitespace
GraphPairExtensions: avoid creation of non exisisting items in sink
GraphCursor.Create
GraphDependencies introduced
GraphPair: remove in Sink only
DigidocSchema: refactored Pages()
dbo.ThingGraph: fieldnames
ContentViewers: fix error if switching between DigidocViewer and ContentViewer
WiredScenes: extract SceneChanger baseclass
VisualThingGraphExtension: ContainsVisualOf to avoid creation of non existing visuals
GraphItemReceiver: requests can be changed while iterating