8.10.0

Add Expecto.hasLength. #312 thanks @drhumlen
Count when focusing on any test is off. #308 thanks @AnthonyLloyd
Reported error is unreadable in TeamCity. #309 thanks @AnthonyLloyd
Add colours switch. #306 thanks @AnthonyLloyd
Number of other small items. #306 thanks @AnthonyLloyd