Python bindings: print error messages for non-numeric signal value updates; handle lists of mixed ints and floats by upcasting rather than casting to first type.
Python bindings: print error messages for non-numeric signal value updates; handle lists of mixed ints and floats by upcasting rather than casting to first type.

malloch/libmapper,malloch/libmapper,malloch/libmapper,libmapper/libmapper,libmapper/libmapper,malloch/libmapper,malloch/libmapper,libmapper/libmapper,libmapper/libmapper,malloch/libmapper,libmapper/libmapper,libmapper/libmapper