Prepare for next release

Author: pdil

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: usmapdata
 Title: Mapping Data for 'usmap' Package
-Version: 0.6.0
+Version: 0.6.0.9000
 Description: Provides a container for data used by the 'usmap' package.
     The data used by 'usmap' has been extracted into this package so that the
     file size of the 'usmap' package can be reduced greatly. The data in this

NEWS.md

@@ -1,4 +1,7 @@
+# [unreleased]
+
 # usmapdata 0.6.0
+Released Saturday, June 14, 2025.
 
 * Change output of `us_map()` and `centroid_labels()` to data frame instead of tibble.
   * If `tibble` format is required use `tibble::as_tibble()` on the output.