deeptime 2.0.0

deeptime now requires ggplot2 version 3.5.0 or higher.
This new major version of deeptime includes several new features:

• Added FGDC/USGS geologic patterns to internal data (#52)
• Added functions to retrieve and plot FGDC/USGS geologic patterns (#52)
• Added functions to use FGDC/USGS patterns as ggplot2 fills or with the ggpattern package (see new vignette) (#52)
• Added the true_colors option to get_scale_data(), which, when set to FALSE, can be used to retrieve the custom Macrostrat colors that were previously in the built-in datasets (#62)
• Updated built-in timescales to 2023/06 version of GTS
• Added option to coord_geo() to abbreviate interval labels based on only the intervals that are being plotted (#64)
• Added guide_geo() as an alternative to coord_geo(), mostly for use with radial plots (#53)

Bug fixes:

• Fixed the built-in timescale datasets to have true CGMP colors for the Precambrian (#62)

Notable changes:

• The phytools package is no longer required to install deeptime but is required to use the geom_phylomorphospace() function
• The geomtextpath package is no longer required to install deeptime but is required to add labels with the coord_geo_polar() or coord_geo_radial() functions
• The gggeo_scale_old() function has been fully deprecated