Add new sniff for various integer types. #160
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Checks for: * binary integers which were introduced in PHP 5.4 * invalid binary integers * invalid octal integers which were truncated prior to PHP 7 (warning) and give a parse error in 7 (error). * hexadecimal numeric strings for which the type juggling behaviour and recognition as numeric was inconsistent prior to PHP 7 (warning) and are no longer treated as numeric in PHP 7+(error). Includes unit tests. Closes PHPCompatibility#55
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Checks for:
Includes unit tests.
Closes #55