Only update output if we're on a valid color (uses a dead space to avoid flicker)
Add running free memory to detect any leaks
Rename define (SERIAL is apparently already/always defined)
Does not seem to work when in PROGMEM
After/return calls were inside the ifdef, also a few unneeded breaks
Use F()'s and the passed url
track the heater relay status
HTTP_req is only needed in the httpserver
Several ajax replies and progmem for regularly used strings
Need buffer
Increase frequency if failure
Randome newline (must have been missed during commit batch)
Use a soft-coded temperature and allowance