Fix issue with unsynced grid/tick pad settings

Author: lukelbd

proplot/internals/rcsetup.py

@@ -1845,6 +1845,7 @@ def copy(self):
     ('formatter.use_offset', 'axes.formatter.useoffset'),
     ('formatter.offset_threshold', 'axes.formatter.offset_threshold'),
     ('grid.below', 'axes.axisbelow'),
+    ('grid.labelpad', 'grid.pad'),
     ('grid.linewidth', 'grid.width'),
     ('grid.linestyle', 'grid.style'),
     ('gridminor.linewidth', 'gridminor.width'),
@@ -1856,6 +1857,7 @@ def copy(self):
     ('margin', 'axes.margin'),
     ('meta.width', 'meta.linewidth'),
     ('meta.color', 'meta.edgecolor'),
+    ('tick.labelpad', 'tick.pad'),
     ('tick.labelsize', 'grid.labelsize'),
     ('tick.labelcolor', 'grid.labelcolor'),
     ('tick.labelweight', 'grid.labelweight'),