space-time none coordinate variable should not be checked in check_independent_axis_dimensions. The check has been changed to check: 1) whether variable dimension is a space-time dimension 2) whether variable dimension has associated coordinated variable. Issue 72 
space-time none coordinate variable should not be checked in
check_independent_axis_dimensions.
The check has been changed to check:
1) whether variable dimension is a space-time dimension
2) whether variable dimension has associated coordinated variable.
Issue 72 
petejan/compliance-checker,DanielJMaher/compliance-checker,webtrike/compliance-checker,abirger/compliance-checker,ioos/compliance-checker,ocefpaf/compliance-checker,aodn/compliance-checker,duncombe/compliance-checker,lukecampbell/compliance-checker