Improved Command class management.

src/myfasthtml/controls/Keyboard.py

@@ -2,7 +2,7 @@ import json
 
 from fasthtml.xtend import Script
 
-from myfasthtml.core.commands import BaseCommand
+from myfasthtml.core.commands import Command
 from myfasthtml.core.instances import MultipleInstance
 
 
@@ -17,7 +17,7 @@ class Keyboard(MultipleInstance):
     super().__init__(parent, _id=_id)
     self.combinations = combinations or {}
   
-  def add(self, sequence: str, command: BaseCommand):
+  def add(self, sequence: str, command: Command):
     self.combinations[sequence] = command
     return self