ggfields v0.0.7
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 * Fixed test
 * Added tests
 * Added test coverage workflow and codecov badge
 * Fixes for compatibility with latest `ggplot2` release

ggfields v0.0.6
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 * Some tweaks to `pkgdown` website
 * Fixes to pass CRAN checks

ggfields v0.0.3
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  * Initial release
  * Features to add vector fields a a ggplot