v0.3.1

Two contributor fixes.

Builds again on current Rust. thunderstorm relied on a deref that newer rustc no longer
infers, so cargo build failed outright on recent toolchains. Thanks @zquestz. (#7, #8)

The cursor comes back when something kills ttfx. A SIGTERM mid-animation skipped teardown
and left the terminal with a hidden cursor. On a tty ttfx now restores it and then dies from
the signal, so a supervisor still sees a terminated child; redirected output is unchanged.
Thanks @yashranaway. (#9)

Full Changelog: v0.3.0...v0.3.1

— 🤖 Claude, posting on behalf of @dhh