* Fix loosly comparison to strict + argument types and return types for >=7.0
* Change hard-coded strings to ::class,
* Fix unit-tests failures - some relative to 7.0 phpunit env deployment
* Fix exception string + format return types
* Change string representation of new classes in traceLog to ::class
Credit to @arthurkushman
Nathan van der Werf
Arthur Kushman
Samuel Georges
Szabó Gergő
Stefan Talen