v0.3.2

Release 0.3.2: remove IP / mDNS validation

Original design relied on aioairq.AirQ.__init__ checking if the input was a valid IP address or an mDNS of a very specific structure, and raising an InvalidInput otherwise.
Now, aioairq==0.3.2 removes said check completely following a user's request to allow arbitrary host name and DNS entries. In the config flow, "cannot_connect" covers the cases of misspelled or erroneous inputs now, which previously were covered by a dedicated "invalid_input".