Version 0.1.2

• Trim nul chars off the end of descriptor strings.

Version 0.1.1

• Cleaned up Devices, the iterator for DeviceList.
• Added IntoIterator for DeviceList. Can now do for loops over the device list itself.
• Updated fields enum values:
  • "C" repr and variants agree with comparable libusb constants.
  • Implemented From traits for the ones missing them.
  • EndpointDescriptor now uses the From traits
• Fixed Windows build warning