all queries now default to last 28 days if either start or end date is not set
refactoring setting default dates into its own method
fixing all lint errors
moving src to output. adding new version
updating sample codes to new output location
splitting up main library into smaller libraries. Adding a new build file. Adding a minified output
modifying chart constructor to use set
Added new CoreQuery base class. Added Core Query Demo. Added gjslint checks to BUILD file
updateding Readme