Add option to control spi read bit

See issue #88

Fix for issue #83

Comment change only. No code changes.

Fix for issue #77

Calling set_pin_mode_dht for the same pin will now throw an exception.

Satisfy pull request #76

See pull request #76

Pull request #75

Merged and also added some cleanup

Add Contributed Example For MCP-9600

Only an example was added to the contributed examples. No other changes were made.

More toml corrections

1.35

increased max # steppers from 4 to 8

Correcting typo in project.toml

1.34

increased max # steppers from 4 to 8

Using pyproject.toml

1.33

increased max # steppers from 4 to 8

Increased maximum number of steppers from 4 to8

This solves issue #66