Release v0.4.2

What's Changed

• CI: build macOS MEX on macos-15 with MATLAB R2025a by @stevevanhooser in #30
• ci: build an Intel Mac MATLAB MEX (mexmaci64) under Rosetta by @stevevanhooser in #33
• ci: build x86_64 macOS wheels (cross-compiled on arm64) so Intel Macs never build from source by @stevevanhooser in #32
• Bump version to 0.4.2 by @stevevanhooser in #34

Full Changelog: v0.4.1...v0.4.2