Graphedexcel

1.1.5 was broken.

What's Changed
* General improvements by dalager in https://github.com/dalager/graphedexcel/pull/17
* Improved logging
* Better command line documentation with `--help`
* A lot of refactoring and housecleaning

**Full Changelog**: https://github.com/dalager/graphedexcel/compare/v1.1.0...v1.1.5

* Adding `--config` argument to provide visualization settings from json config file

* Better color handling
* Improved plot settings for very large sheets

**Full Changelog**: https://github.com/dalager/graphedexcel/compare/v0.0.12...v0.0.13

**Full Changelog**: https://github.com/dalager/graphedexcel/compare/v0.0.11...v0.0.12