- config.rs: expand a leading ~ in the save_dir config value on load.
The documented example config (save_dir = "~/Pictures/Screenshots")
was previously taken literally, silently creating ./~/Pictures/... in
the current working directory. Added unit tests.
- Cargo.toml: 1.0.0 -> 0.1.0, matching the only existing tag (v0.1.0).
breadshot --version previously reported nine releases ahead of the
actual release history.
