* Use a single common function prototype for all (but two) commands
* Remove "last param" from every param, in favour of an "end_cmd"
* Rename "send_cmd" to "start_cmd" to better reflect what it does
* Replace hard-coded param counts with macro (sizeof(params) / sizeof(inParam))
* Eliminate common causes of bugs
* Try to document some functions
* Correct some types (wl_enc_type, peek as bool)
* Handle timeouts & sleep states
* Successful command exits sleep