Version 1.4.0

• Check if the app is being run for the first time (based on whether the history file exists, and a bit of additional simple logic), and if so, prompt the user to confirm that they have updated their shell configuration (Github #83)
• If the app panics/crashes, the terminal state is properly reset, so it shouldn't produce garbled ouptut anymore
• Upgrade clap dependency to latest version
• Small improvements to setup instructions and user manual
• Footer error message is not cleared when search is updated, only when changing the folder