REPL backspace bug

[yulesa]

While using the REPL CLI, if you move the cursor and try deleting a character, the character deleted is not the one where the cursor is, but the last one.

**Steps to reproduce the behavior:

• Create a REPL command while in the REPL CLI.
• Move the cursor using the arrow keys.
• Delete some characters using the backspace key.

Expected behavior The deletion of the character where the cursor is.

Additional context The issue is in the repl.rs: pub async fn run(&mut self) -> Result<(), Box<dyn std::error::Error>> function.

[yulesa]

Proposed fix in PR: https://github.com/iankressin/eql/pull/24

[yulesa]

Fixed in PR: https://github.com/iankressin/eql/pull/24