0.12.6

• c5fa47c - Find unnecessary ternary operators
• 7d49dcf - Fix
• bcd9b68 - Use the maintained version of php-parallel-lint
• 287d53f - Fix build
• 1237536 - Travis > Test on PHP 7.4
• 70b84f6 - Updated coding standard that can run on PHP 7.4
• f39404d - Use GitHub Actions instead of Travis CI
• 80a77d3 - Automatic release workflow