Improved behavior of isort --check --atomic against Cython files.
Fixed#1769: Future imports added below assignments when no other imports present.
Fixed#1772: skip-gitignore will check files not in the git repository.
Fixed#1762: in some cases when skip-gitignore is set, isort fails to skip any files.
Fixed#1767: Encoding issues surfacing when invalid characters set in __init__.py files during placement.
Fixed#1771: Improved handling of skips against named streamed in content.
Signed-off-by: Zang Ruochen <zangrc.fnst@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
