Release version 0.13.0

[clssn]

This release is going to make many variants of the Numato devices compatible.

Those variants' major differences are in the end-of-line sequences of responses
to queries and notificastions. Worse, in some cases they are not even uniform
across responses and notifications of a single device variant. Consequently,
this version now completely discards all end-of-line characters while reading
which also simplifies the reading code a lot. Discarding is possible as all
device resonses are either known by their length or are terminated by the
> prompt character.