v1.0.0-b.13

What's Changed

• fix m2m method return types by @CircuitSacul in #75
• update license, remove unnecessary copies by @CircuitSacul in #76
• update readme.md links by @CircuitSacul in #77
• Make it clear where VarChar comes from in README by @Lunarmagpie in #78
• Make Converter an ABC by @Lunarmagpie in #79

New Contributors

• @Lunarmagpie made their first contribution in #78

Full Changelog: v1.0.0-b.12...v1.0.0-b.13