Rename separator to sep

Author: seisman

pygmt/params/base.py

@@ -31,7 +31,7 @@ class BaseParam:
     ...         return [
     ...             Alias(self.par1),
     ...             Alias(self.par2, prefix="+a"),
-    ...             Alias(self.par3, prefix="+b", separator="/"),
+    ...             Alias(self.par3, prefix="+b", sep="/"),
     ...         ]
 
     >>> var = Test(par1="val1")

pygmt/params/box.py

@@ -116,10 +116,10 @@ def _aliases(self):
         Aliases for the parameter.
         """
         return [
-            Alias(self.clearance, prefix="+c", separator="/", size=(2, 4)),
+            Alias(self.clearance, prefix="+c", sep="/", size=(2, 4)),
             Alias(self.fill, prefix="+g"),
-            Alias(self._innerborder, prefix="+i", separator="/", size=(1, 2)),
+            Alias(self._innerborder, prefix="+i", sep="/", size=(1, 2)),
             Alias(self.pen, prefix="+p"),
             Alias(self.radius, prefix="+r"),
-            Alias(self._shading, prefix="+s", separator="/", size=(1, 2, 3)),
+            Alias(self._shading, prefix="+s", sep="/", size=(1, 2, 3)),
         ]