Fix recusrive call of aggregationFlag.String bug in whisper-create.go
Add DefaultCreateOptions() to create a CreateOptions with default values. Needed because a XFilesFactor of 0.0 is valid and should not be assumed to mean default XFilesFactor
fix archive rollup
Change fetch to check returned points are in retention range
Add test for archive rollup
Merge pull request #7 from timob/master

Bug fixes