2.5 Edge-triggered sockets should work
2.6 multi upkeep
2.7 Virtual external sockets
+ 2.8 dynamically decide to use socketpair
3. Documentation
3.2 Provide cmake config-file
See https://github.com/curl/curl/issues/5835
+2.8 dynamically decide to use socketpair
+
+ For users who don't use curl_multi_wait() or don't care for
+ curl_multi_wakeup(), we could introduce a way to make libcurl NOT
+ create a socketpair in the multi handle.
+
+ See https://github.com/curl/curl/issues/4829
+
3. Documentation
3.2 Provide cmake config-file