V4.0 : Better for some

The v4.0 release.

• Latest esp-arduino-core release (SDK v4.4-beta1)
• OTA enabled; configurable (including password) in myconfig.h
• MDNS support
• Camera bus xclock setting in config and UI, improves running on budget modules with bus issues, allows tuning the xclk frequency on the fly to tune for best speed/quality/etc
• SPIFFS is now read (and formatted if needed) before camera module initialisation; this helps with a SPIFFS startup errors
• 'kill stream' button in dump page, terminates the stream at the camera end in cases where the browser fails to drop the connection.
• UI tuneable frame rate limiter for smoother displays and or lower network use
• More info in dump page, including MCU temperature and xclk frequency
• UI tweaks, some notes and help for quality, xclk and other settings
• Improved display and logging of critical errors
• Support ArduCAM_ESP32S_UNO
• A whole bunch of spelling, comment and log tweaks

But..

• No more Face Recognition (actually; this is a feature, it allows for OTA updating)
• No more support for modules without PSRAM.

A big 'Thank You' to all the other people who contributed to this release with code, problem reports and discussion.