1.63

- BTTFN: Fix keep-alive logic and re-connection after a TCD-reboot.

1.62

- SA: Shift frequency bands slightly to better match mic frequency  response and possibly batch-to-batch dispersion; better pace-keeping; clean up arduinoFFT.
- IO14 is now mirror of the TCD's TT-OUT (in its original function); goes HIGH  on start of temporal displacement, LOW on re-entry. There is no lead time. Note: There is no terminal for IO14. It is, however, accessible through a solder pad next to the ESP32, pin no. 8 from bottom.
- BTTFN enhancements in sync with TCD capabilities
- Code refinements

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1.57

- WM fixes (Upload, etc)
- Add "No SD present" banner in Config Portal if no SD present

1.55

- Fix TCD hostname length field
- Config Portqal: Re-order settings; remove non-checkbox-code.
- WiFi Manager: Reduce HTML page sizes

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