* add a check to prevent multiple log handler additions. Still a hack, but ok for this purpose.
* GuessKey_Statistics.__init__() now validates is_solved using same class validator as unpack()
* fix exception text to reflect allowed types for Hangman_State
* Also in Hangman_State, fix validation when input is bytes / bytearray
* In dc34_PlayHangman_validate_user_input(), strip the input before checking length.
1. remove hard-coded binary path
2. define TCP_PORT in fallback path
3. only detect device when not called from client
4. struct.pack() requires bytes / bytearray when packing a string.
5. fix typo "existing" -> "exiting"
6. remove unused imports
Works both from the command-line and from within the PM3 client:
* python3 ./client/pyscripts/dc34.py
* ./pm3 -c "script run dc34"
Supports all three games:
* TicTacToe
* Hangman
* GuessKey
See https://dc34.rfid.wtf/
iceman1001