ENH: Implement ExtentUtilities::WithinExtent
ENH: Add Local-to-Global IJK mapping functions
ENH: Delete dax results from repo
ENH: Move older implementation to reference folder
ENH: Added GetArrayPointerMacro

This commits adds the GetArrayPointerMacro, which returns a pointer
to an array of a internal class member.
WIP: Refactoring...
WIP: Adding stream-count utility