Improve test suite to test against legacy PHP 5.3 through PHP 7.3 and support PHPUnit 7#85

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clue-labs:tests

Aug 16, 2019

Commits on Aug 16, 2019

Test against legacy PHP 5.3 through PHP 7.3 and support PHPUnit 7
clue
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Improve code coverage by removing dead code and skip extension code
clue
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