Could you please add a feature that allows for the Fibonacci extension in addition to the existing Fibonacci retracement function? Currently, we only have the ability to use Fibonacci retracement, and it would be beneficial to include the extension feature as well.

Additionally, I would like to request the implementation of a function to create price alerts. This feature would notify users when a specific price level is reached, enhancing their ability to track important price movements.

Thank you for considering these enhancements!