v0.3.5

What's Changed

• Update proc_macro2_diagnostic requirement from 0.0.1 to 0.1.0 by @dependabot[bot] in #37
• warn if not #[must_use] by @MusicalNinjaDad in #40
• bump to v0.3.5 + changelog by @MusicalNinjaDad in #42

Full Changelog: v0.3.4...v0.3.5