beremiz

Added runtime side trace buffer, handled in a separate thread, limited to 1MB, and dropped after 3 seconds if not used by IDE. GetTraceVariables is not anymore blocking on next PLC cycle
These classes are intended for use server-side.
e.g. in a django view.py :
from pyjs.jsonrpc.django import JSONService, jsonremote
jsonservice = JSONRPCService()
@jsonremote(jsonservice)
def test(request, echo_param):
return "echoing the param back: %s" % echo_param