### Dependencies
- Bumped `ixy` from `0.6.1` to `0.7.0`. All of `0.7.0`'s changes are additive (`Rect::clamp_within`/
`centered_in`, `Rect::inset`/`outset`, `Size` parity with `Pos`, `Rect * Size`, plus a fix so
`Rect::row_rect`/`col_rect` actually clamp as documented) and grixy doesn't use `row_rect`/
`col_rect`, so no source changes were needed here. Bumped as a minor (not patch) release
regardless: `grixy::core::{Pos, Rect, Size}` are type aliases directly onto `ixy`'s types, so any
consumer that also depends on `ixy` directly (not just through grixy) and passes its own
`ixy 0.6.x`-typed values into grixy's API would fail to compile against a plain patch bump - a
new major/minor of a re-exported public dependency is a breaking change for grixy's own API
surface even though `ixy` itself only added things. This is exactly the failure a downstream
consumer (retroglyph) hit trying to move to `ixy 0.7.0` while grixy was still pinned to `^0.6.1`.