Contact Form 7 5.9.1

What's Changed

• Reduce tags by @takayukister in #1383
• WPCF7_SWV_Schema::validate() is a generator by @takayukister in #1384
• Iterate based on form-tags by @takayukister in #1386
• Use null coalescing operator by @takayukister in #1387
• Add readme tag by @takayukister in #1392
• Compare strictly with empty string by @takayukister in #1394
• Decode entities when adding enum option by @takayukister in #1397
• Update packages by @takayukister in #1399
• Prepare for 5.9.1 release by @takayukister in #1400

Full Changelog: v5.9.0...v5.9.1