Typing a word, followed by a space crashes the program

[ewpratten]

How to reproduce:

1. Open kalk
2. Type test (notice the trailing space)
3. Press enter

The error:

thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', kalk/src/lexer.rs:80:18
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
[1]    18396 abort (core dumped)  ./kalk_cli

Version: 0.1.10

[PaddiM8]

Oh yeah, I'm getting this too apparently. Should be fixed now, thanks a lot!