v0.4.0 🌈

Changes

• fix: bump tools @jnylen (#32)

🧰 Maintenance

• Update mrml requirement from >= 0.2, < 0.8 to >= 0.2, < 0.9 @dependabot (#33)
• Bump rspec from 3.10.0 to 3.11.0 @dependabot (#23)
• Bump actionmailer from 5.2.6.3 to 5.2.7 @dependabot (#30)
• Update mrml requirement from >= 0.2, < 0.7 to >= 0.2, < 0.8 @dependabot (#26)
• Bump railties from 5.2.6.3 to 5.2.7 @dependabot (#31)
• Bump railties from 5.2.6 to 5.2.6.3 @dependabot (#28)
• Bump actionmailer from 5.2.6 to 5.2.6.3 @dependabot (#29)
• Bump rspec-rails from 5.1.0 to 5.1.1 @dependabot (#27)
• Bump rspec-rails from 5.0.2 to 5.1.0 @dependabot (#22)