Betconnect

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**Bug Fixes**
- 32 fixed the URL called for selections_for_market in betting.py
- 28 remove sending of None in filters.py

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**Example Improvements**

- dailyhorseracing - removed bet_request_get
- bettinghistory - removed bet_request_get and added my_bets with customer_strategy_ref example

**Bug Fixes**

- 22 BackersStats - removed from API
- 21 AccountPreferences - building, city, thoroughfare set to optional strings

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**Improvements**

- 17 session timeout
- 18 start_date_time added to ActiveFixture

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**Improvements**

- betcode-org migration
- __version__ added / setup updated
- GitHub actions added
- req-test added
- MIT Licence added
- ReadMe update
- docs added

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**Resource updates**

- typing improvements

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**Resource update**

- locality nullable