Since we have added new enum variants to the `StyleComponent` which was
not previously marked `#[non_exhaustive]`, we must bump left-most
non-zero version number (see
[specifying-dependencies](https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#specifying-dependencies-from-cratesio)).
Otherwise client code that do exhaustive matches on `StyleComponent`
will stop compiling.