v0.4.0

Bumped! 🏝️

Diff: v0.3.0...v0.4.0

Changes:

• Composer: php 7.2 [69cba95] (@f3l1x)
• Composer: nette/tester >= 2.4.3 [4768a7d] (@f3l1x)

Maintenance:

• Composer: open v0.4.x [6d37187] (@f3l1x)
• Travis: added PHP 7.4, drop string for outdated deps [ac826b2] (@f3l1x)
• Composer: update nette/tester to 2.3.4 [6084c00] (@f3l1x)
• Travis CI -> GitHub Actions [19d88c6] (@petrparolek)
• Readme: polished (#10) [1702d63] (@petrparolek)