Addressed PR comments

Author: tleonhardt

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.9.26 (January 26, 2020)
+## 0.9.26 (TBD, 2020)
 * Breaking changes
     * Renamed `locals_in_py` attribute of `cmd2.Cmd` to `self_in_py`
     * The following public attributes of `cmd2.Cmd` are no longer settable at runtime by end users:

cmd2/cmd2.py

@@ -181,8 +181,6 @@ def __init__(self, completekey: str = 'tab', stdin=None, stdout=None, *,
         super().__init__(completekey=completekey, stdin=stdin, stdout=stdout)
 
         # Attributes which should NOT be dynamically settable via the set command at runtime
-        # To prevent a user from altering these with the py/ipy commands, remove self_in_py from the
-        # settable dictionary during your applications's __init__ method.
         self.default_to_shell = False  # Attempt to run unrecognized commands as shell commands
         self.quit_on_sigint = False  # Quit the loop on interrupt instead of just resetting prompt
         self.allow_redirection = allow_redirection  # Security setting to prevent redirection of stdout