Presence breaks after receiving invalid JSON response

[Hpmason]

If server query returns an invalid JSON response, the program panics. Other commands will still work, but the presence will stop updating.

missing field `version` at line 1 column 2
invalid JSON response: "{}"
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src/handler.rs:80:61
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

This error originates from

mcbot-rs/src/handler.rs

Line 80 in 7283bcf

for player in status.players.sample.unwrap() {

Fix should handle None case to avoid panic

[Hpmason]

Should be fixed in the most recent commit. Will require more testing