Use more-specific class in place of 'switch' to avoid common conflicts
Fix anomally of years generation
Update CONTRIBUTING.md
Update CONTRIBUTING.md
Update CONTRIBUTING.md
Merge pull request #430 from nelsonblaha/master

Use more-specific class in place of 'switch' to avoid common conflicts
Update CONTRIBUTING.md
Merge pull request #435 from ZombieHippie/parents-not-end

Fix anomally of year spans generation
updated compiled sources