Possibly strange over-indentation
I'm using python-mode.el 6.2.3 with emacs 24.5.1 and found multi-line strings are over-indented.
```python
#!/usr/env/bin python
print('test'
'string'
'here')
```
Flake8 for example complains those lines are over-indented (error code: E127)
I think those lines should be formatted as follows:
```python
#!/usr/env/bin python
print('test'
'string'
'here')
```
py-count-indentation returns 10 on the line with 'string'.
I could'nt figure out whether some flag can suppress the behavior that lets py-count-indentation return 7 instead.
issue