Misc: Update copyrights, TODO and libusb_version.describe

* Changes suggested by Chuck Cook & Xiaofan Chen
diff --git a/TODO b/TODO
index 6c162a3..e64b279 100644
--- a/TODO
+++ b/TODO
@@ -1,9 +1,2 @@
-for 1.1 or future
-==================
-optional timerfd support (runtime detection)
-notifications of hotplugged/unplugged devices
-offer API to create/destroy handle_events thread
-isochronous sync I/O?
-exposing of parent-child device relationships
-"usb primer" introduction docs
-more examples
+Please see the libusbx roadmap by visiting:
+https://github.com/libusbx/libusbx/issues/milestones?direction=asc&sort=due_date
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