Micropython-wifimanager

Resolves an issue where despite config settings webREPL doesn't start.
Updated setup.py to use correct gzip for upip

* Adds BSSID connect ability for preferred ap with same SSID
* Async support
* More options moved to JSON config
* Unit tests

Allow config of access point.
Bugfixes around missing config file.
PEP8 adjustments for the constants

Initially, it all seems to work. Only now can it be tested with micropython-upip