Version bump

[bobveringa]

Most of the improvements discussed in #75 have now been merged. Should the version number be updated to reflect these changes?

I have a few improvements in the works, such as the continuation of #24 as our custom wifi_connect function already does this. However, I have not yet started on this and I would to put it through some validation before opening a PR.

[peterhinch]

Indeed - once we've resolved the issue of whether to change ._keep_alive. Also some doc changes I'm planning.