fix(ubus): fix lua_ubus_subscribe

perf: Simplify the function eco_new_metatable

perf(ubus): Reduce duplicate code

perf(time): reimplement the sleep operation.

feat(ubus): add support publish/subscriber.

chore: move ubus examples in ubus sub directory.

feat(ubus): add support publish/subscriber.

feat(socket): add support set address for socket option `packet_add_m…

feat: bump version 3.7.0

feat(sys): Add a method sh to run shell cmd simply

feat(sys): Add an method sh to run shell cmd simply

feat(hash): add support hmac

feat(hash): add support sha256

feat(socket): add support set SO_BROADCAST

feat: bump version 3.6.2

fix(file): Fix file descriptor leak in file.sync

chore: rename method release to close for sys.exec.

perf: return clearer error messages for sys.exec

feat(dns): add support lookup from /etc/hosts

feat: bump version 3.6.1

feat: bump version 3.6.0

fix: Fix link libraries in CMakeLists

feat: bump version 3.6.1

feat: bump version 3.6.1

feat: add a new module channel similar to Golang's channel

feat: add a new module channel similar to Golang's channel

fix: call uloop_done after ubus_connect_ctx