Add actual file moving
Prevent installation of PHP7.3 polyfill
Remove unnecessary command
Fix case insensitive string comparison
Allow class_exists(..., false) to inform class-string type
Remove TSqlSelectString and related dependency
Fix vimeo#1628 - improve behaviour of unset in loops
Fix vimeo#1616 - allow Psalm to output checkstyle format
Allow MixedArrayTypeCoercion to be properly suppressed by default
Fix checks for parent method implementers