Log Message:
py-flake8-import-order: updated to 0.16

0.16:
* Change spacing determination to consider only blank newlines as a space. This \ 
adds NewLine nodes to the checker and hence could break custom styles (that use \ 
the nodes directly). This also drops the asttokens dependency as it is no longer \ 
required.
* Understand the existance of namespaced packages, thereby allowing different \ 
namespaced pacakages to be defined as local or third party.