CSAFE_PM_GET_STROKESTATS is missing

[undertaker1753]

Hi

I'm looking for the strokestats, but they are missing in the file pyrow/csafe/csafe_dic.py
Add it there with 0x6E ends in a bug:

Traceback (most recent call last):
File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
self.run()
File "/usr/lib/python3.7/threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "/home/pi/src/pyrow/pyrow/ergmanager.py", line 147, in erg_monitor
monitor = self._pyerg.get_monitor(pretty=True, forceplot=True)
File "/home/pi/src/pyrow/pyrow/pyrow.py", line 223, in get_monitor
results2 = self.send(command)
File "/home/pi/src/pyrow/pyrow/pyrow.py", line 441, in send
csafe = csafe_cmd.write(message)
File "/home/pi/src/pyrow/pyrow/csafe/csafe_cmd.py", line 60, in write
value = __int2bytes(varbytes, intvalue)
File "/home/pi/src/pyrow/pyrow/csafe/csafe_cmd.py", line 12, in __int2bytes
if not 0 <= integer <= 2 ** (8 * numbytes):
TypeError: '<=' not supported between instances of 'int' and 'str'