Aliases are now stored within the StatementParser instance

Also:
- Added read-only aliases property to cmd2.Cmd to get aliases from the StatementParser
- Added a setter for the allow_redirection property in cmd2.Cmd
- Made some initialization code more self-documenting

1 files changed, 3 insertions, 3 deletions

diff --git a/cmd2/parsing.py b/cmd2/parsing.py
index 380c9261..cd81f250 100644
--- a/cmd2/parsing.py
+++ b/cmd2/parsing.py
@@ -295,15 +295,15 @@ class StatementParser:
         else:
             self.terminators = tuple(terminators)
         if multiline_commands is None:
-            self.multiline_commands = ()
+            self.multiline_commands = tuple()
         else:
             self.multiline_commands = tuple(multiline_commands)
         if aliases is None:
-            self.aliases = {}
+            self.aliases = dict()
         else:
             self.aliases = aliases
         if shortcuts is None:
-            self.shortcuts = ()
+            self.shortcuts = tuple()
         else:
             self.shortcuts = tuple(shortcuts)