- Use anyhow to handle errors.

- Debug speed control, pause/run, step back, run until.
- IO is a struct instead of traits.
- Handprint now is wprusty.
- Return code upon q instruction.
- Option to quit when not implemented.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rusty_funge"
-version = "2022.12.3"
+version = "2022.12.4"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -10,4 +10,5 @@ clap = { version = "4.0.29", features = ["derive"] }
 chrono = "0.4.23"
 cursive = { version = "0.20.0", features = ["termion-backend"] }
 rand = "0.8.5"
-num = "0.4.0"
+num = "0.4.0"
+anyhow = "1.0.66"