Function compareVersions

Compares two versions and determines if one is newer, older or the same, returns - (-1) if version1 is lower than version2 - (0) if version1 is equal to version2 - (1) if version1 is higher than version2

Package: SMF
Copyright: 2020 Simple Machines and individual contributors
License: BSD
Author: Simple Machines https://www.simplemachines.org
Located at Sources/Subs-Package.php

Parameters summary
`string`	`$version1`	The first version
`string`	`$version2`	The second version

Return value summary
`integer`	-1 if version2 is greater than version1, 0 if they're equal, 1 if version1 is greater than version2

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Function compareVersions