pyx api: Provide sleep
- Add sleep functionality to libgolang runtime; - Implement sleep for thread and gevent runtimes. Thread runtime implements sleep independently of GIL, but only for POSIX for now; - Switch golang.time py module into using golang.time pyx module. As we are adding sleep, related functionality to query system about "what is current time?" is also added.
Showing with 328 additions and 14 deletions