All integer registers forced to signed int

[borpin]

emonhub/src/interfacers/EmonHubMinimalModbusInterfacer.py

Line 173 in ebbaa96

if self.datatype == 'int':

There should be a new datatype of unsigned_Int

Commiting to the master branch directly rather than by PR is also a bad idea (IMHO).

ebbaa96