Hotfix script dropbox_autoregistration.py, update to user interface change of Dropbox website
Hotfix class GoogleDrive, when called without foreground option, FUSE changes the working directory to "/" before calling write(), so the working directory is set explicitly before calling PyDrive
Hotfix methods get_file, and store_fileobject of class GoogleDrive, to be able to store binary data
Update CHANGELOG with new version
Update setup.py with new version