3 cancellation race concerns - better tracking of kernel feedback?
7 review functionality missing over 0.1
8 endianness of control setup, issues when resubmitting transfers
9 rename poll to handle_events
10 make libusb_get_pollfds return const?
12 make descriptor things const?
15 1.0 API style/naming points to reconsider
16 =========================================
17 typedef _cb or _cb_fn or _cb_t?
18 typedef as-is or pointers? libusb_dev_t rather than libusb_dev *?
22 optional timerfd support (runtime detection)
23 notifications of hotplugged/unplugged devices
24 use poll() rather than select()?
25 offer API to create/destroy handle_events thread