Bugfix script dropbox_autoregistration.py, update to user interface change of Dropbox website
Workaround 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
Bugfix class PersistentLRUCache, to read and write utf-8 encoded data
Update CHANGELOG with new version
Update setup.py with new version