Use Symantec Version Number

[jdmdigital]

Right now, version numbers are just number-dot-number and we can simply use a “greater than” operator to compare.

Propose we move to Symantec versioning and use PHP’s version_compare() function to determine support for new functionality not backwards compatible.

Example: v1.9.1 > v1.9.0

See: http://php.net/manual/en/function.version-compare.php