Warning 8266 firmware removed from release pending investigation of potential bug for some users

This is a maintenance release for the 0.15.x series of WLED.

It's focus is on big fixes and greater safety around upgrades

What's Changed

• Bugfix for brightness factor upon save: fixes #4824 by @DedeHai in https://github.com/wled/WLED/pull/4827
• 0.15 - updated AsyncWebServer and AsyncTCP by @willmmiles in https://github.com/wled/WLED/pull/4834
• (0.15.2 backport): Make version information consistent across update interfaces by @Arcitec in https://github.com/wled/WLED/pull/4849
• (0.15.2 backport) Fix broken Sync button after 0.15 refactor by @Arcitec in https://github.com/wled/WLED/pull/4845
• fix ancient UI bug that hides the speed slider in percent FX 0.15 edition by @DedeHai in https://github.com/wled/WLED/pull/4914
• bugfix: do not reset segments if unchanged by @DedeHai in https://github.com/wled/WLED/pull/4969
• Bugfix for FX: Tri Fade by @blazoncek in https://github.com/wled/WLED/pull/4918
• (0.15) RMT High-priority Interrupt driver backport by @willmmiles in https://github.com/wled/WLED/pull/4980
• fix buffer size calculation for ESP8266 (0.15 edition) by @DedeHai in https://github.com/wled/WLED/pull/4951
• 0.15 version of OTA validation by @willmmiles in https://github.com/wled/WLED/pull/4999
• 0.15 - Fix bin file output names by @willmmiles in https://github.com/wled/WLED/pull/5034
• Fix blank area issue with Twinkle by @benjamw in https://github.com/wled/WLED/pull/5007
• Backport of Bootloop detection & recovery (#4793) by @DedeHai in https://github.com/wled/WLED/pull/4840
• 0.15: Add old version check to OTA update by @willmmiles in https://github.com/wled/WLED/pull/5058
• Backport version reporting (PR #5093 and #5111) to 0.15.x by @Copilot in https://github.com/wled/WLED/pull/5126
• Dynamic LED type selection, backport to 0.15 by @DedeHai in https://github.com/wled/WLED/pull/5084
• fix for #4298 - no conflict with DMX output - backport by @netmindz in https://github.com/wled/WLED/pull/5097

Full Changelog: https://github.com/wled/WLED/compare/v0.15.1...v0.15.2