Log Message:
(graphics/R-virdisLite) Updated 0.5.1 to 0.6.1

# viridisLite 0.6.1
## New features

* N/A.

## Minor improvements and fixes

* Include unemployment data in package to avoid CRAN check errors when original
 data is not accessible.

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# viridisLite 0.6.0
## New features

* Add 3 more color maps: mako, rocket, and turbo.

## Minor improvements and fixes

* Minor bug fixes and improvements here and there.