Slice instead of copy in indexedencoding
Expanded timing utilities.
Store a buffer reference instead of a slice.
Merge branch 'master' of github.com:JosephCottam/AbstractRendering
Merge branch 'master' into sliceBuffer
Removed bytebuffer from IndexedEncoding...never quite sure if it was thread safe.  Replaced with offset-based 'get' methods in BigFile.
Computing/caching bounds on cached subset creation.
ID Optimized horizontal rollup.