WordPress 4.3 has just walked on stage. Named after the great jazz/blues singer Billie Holiday, WordPress 4.3 has some great new features, and one big gotcha!. First, the bad news. If your site uses old plugins, Billie might cause problems. Do not upgrade to WordPress 4.3 until you've checked this out. Here's the deal: If a plugin was coded using PHP 4, WordPress deprecates it and lets you know there's a problem. This is sort of like Microsoft finally deciding to stop supporting Windows 95. …
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