Python-u2flib-host

** Add CTAP HID capability bits to the HIDDevice object.
** Change the max length of response data to be compatible with more devices.

** Bugfix: Continue execution with next device if one device fails to open.

** Improved Python 3 compatibility.

** Added support for Python 3.3+.
** utils.rand_bytes() now sources bytes from os.urandom().
** utils.websafe_encode() now returns text strings (unicode() on Python 2.x,
str() on Python 3.x).
** utils.H() has been removed (just use hashlib.sha256() directly instead).
** soft.SoftU2FDevice() now stores keys, key handles and app params as text
strings.
** Replace M2Crypto with Cryptography.

** Fix setup.py so that installation works properly.
** Packaging related improvements.

** License change: Changed license to BSD 2-clause.
** Check both usage page and usage.
** Prefer hidraw backend over libusb, if available.