More Rust version updates
Merge pull request #27 from kmcallister/rust-upgrade

More Rust version updates
fix test for font_size
Merge pull request #29 from sonwow/tests

fix test for font size
Update tests for new Rust
Merge pull request #30 from kmcallister/rust-upgrade

 Update tests for new Rust
Switch from -o to --out-dir.
Revert to using -o for tests
Merge pull request #32 from kmcallister/otest

Revert to using -o for tests