Niceplots

What's Changed
* Save figs fix by A-CGray in https://github.com/mdolab/niceplots/pull/39
* Update testing matrix, start using image comparison by A-CGray in https://github.com/mdolab/niceplots/pull/40


**Full Changelog**: https://github.com/mdolab/niceplots/compare/v2.5.0...v2.5.1

What's Changed
* Improve default behaviour of `label_line_ends` by A-CGray in https://github.com/mdolab/niceplots/pull/38


**Full Changelog**: https://github.com/mdolab/niceplots/compare/v2.4.1...v2.5.0

What's Changed
* `horiz_bar` fix by A-CGray in https://github.com/mdolab/niceplots/pull/37


**Full Changelog**: https://github.com/mdolab/niceplots/compare/v2.4.0...v2.4.1

What's Changed
* Add helper function for saving figure in multiple formats by A-CGray in https://github.com/mdolab/niceplots/pull/36


**Full Changelog**: https://github.com/mdolab/niceplots/compare/v2.3.0...v2.4.0

What's Changed
* Add ability to get colors from style that is not active by eytanadler in https://github.com/mdolab/niceplots/pull/35


**Full Changelog**: https://github.com/mdolab/niceplots/compare/v2.2.0...v2.3.0

What's Changed
* Plot smooth lines between data points by eytanadler in https://github.com/mdolab/niceplots/pull/33
* Update niceplots.yml by A-CGray in https://github.com/mdolab/niceplots/pull/34


**Full Changelog**: https://github.com/mdolab/niceplots/compare/v2.1.0...v2.2.0