Clean up version number, start up strings

Add command to set kpaddr at runtime

TT+KPADDR=18 will set the keypadd address to 18 without compiling the
source.

TT+SYSINFO will output some system information in json format

Fix timing by burning a while loop

Capture last byte of display messages.

Add support for panic alarm.

Add 16Mhz timings

Too many write_chars calls

Send address every F7

Fix timing for out wire comm