style-change, first part
Fix import pattern for exceptions. Performance optimization for correlation.
1.parse time to have milliseconds. 2. add / stdev
1.add demo. 2.fix to_epoch
deleting white spaces
Merge pull request #276 from yarongguo/style-refactory

style-change
Update version to 0.2

Update version for release to pypi.
Merge pull request #278 from SharadGandhi/master

Switch timestamp format to epoch millisecond (Integration with Luminol - part 1)