Figure.basemap: Refactor to use the new alias system

Author: seisman

pygmt/src/basemap.py

@@ -2,6 +2,7 @@
 basemap - Plot base maps and frames for the figure.
 """
 
+from pygmt.alias import AliasSystem
 from pygmt.clib import Session
 from pygmt.helpers import build_arg_list, fmt_docstring, kwargs_to_strings, use_alias
 
@@ -12,7 +13,6 @@
     J="projection",
     Jz="zscale",
     JZ="zsize",
-    B="frame",
     L="map_scale",
     F="box",
     Td="rose",
@@ -82,6 +82,9 @@ def basemap(self, **kwargs):
     {perspective}
     {transparency}
     """
+    alias = AliasSystem(
+        B="frame",
+    )
     kwargs = self._preprocess(**kwargs)
     with Session() as lib:
-        lib.call_module(module="basemap", args=build_arg_list(kwargs))
+        lib.call_module(module="basemap", args=build_arg_list(alias.kwdict))