v0.5.0 🌈

Changes

• feat: update mrml and set up github action matrix @jnylen (#44)
• fix: Update README @jnylen (#36)

🧰 Maintenance

• build(deps): bump railties from 5.2.8 to 5.2.8.1 @dependabot (#41)
• build(deps): bump actionmailer from 5.2.8 to 5.2.8.1 @dependabot (#42)
• build(deps): bump railties from 5.2.7.1 to 5.2.8 @dependabot (#40)
• build(deps): bump actionmailer from 5.2.7.1 to 5.2.8 @dependabot (#39)
• build(deps): bump railties from 5.2.7 to 5.2.7.1 @dependabot (#37)
• build(deps): bump actionmailer from 5.2.7 to 5.2.7.1 @dependabot (#38)
• build(deps-dev): bump rspec-rails from 5.1.1 to 5.1.2 @dependabot (#35)