Licensed under the Apache License, Version 2.0 Now.

Improve the design of cluster, support to join or leave the cluster (#449):

Improve the design of Trie and Route, only the wildcard topics stored in Trie.

Common Test to replace EUnit.

refactor the emqttd, emqttd_time, emqttd_opts, emqttd_node modules.

noproc error when call to gen_server2:call(false, {add_route,Topic,\<0.685.0\>}, infinity) (#446)

Changed the license of all plugins.