* Convert tag values returned as numbers to string
This is a bug in Graphite <= 1.1.7. Since 1.1.8 all values are converted to strings.
* Simplify type conversions
* Fix linting errors
* Use Dataframes and extract tags from response
* Fix timestamp conversion
* Add tests for data frame conversion
* Add missing RefID and simplify returning an error
* draft dataframe/sdk convertion for graphite
* intermedia
* modify init because registration failed
* Allocate memory for each data point value
* Remove redundant memory aliasing
* Remove redundant new line
* Sort imports
* Simplify returning nil values
* fix lint
* remove unused jsondata
* add checks on query length
* remove basic auth from request
Co-authored-by: Piotr Jamróz <pm.jamroz@gmail.com>