0.19.0

Added:

• Env: Added $XONSH_SUPPRESS_WELCOME variable to suppress the welcome message.

Changed:

• Replaced case_insensitive_dictionary dependency with local CaseInsensitiveDict class.

Fixed:

• Parsers: support python3.13: fix deprecation warnings.
• Fix DeprecationWarning while initializing Expression.

Authors:

• Evgeny
• doronz88
• JamesParrott
• Jueun Lee
• Simon Billinge
• Bala
• Gil Forsyth