v2.6.0: Add flag to check for new release on startup

🔔 Flag to Check for new release on startup

As suggested by @rafaelrinaldi in #123

I'd personally suggest current version and one prior and print a warning for other users asking to upgrade. It would be easier to maintain and ensure a better experience.

Option	Default	Description
pure_check_for_new_release false	false	true: check repo for new release (on every shell start)

As this request can disrupt user workflow due to the HTTP request done to fetch information, this feature is disable by default. It's up to the user to decide if he want to enable it by editing your config.

⬇️ Installation

fisher install rafaelrinaldi/pure