Bump version to 3.0.0

Makefile

@@ -2,7 +2,7 @@
 
 PROJECT = emqx
 PROJECT_DESCRIPTION = EMQ X Broker
-PROJECT_VERSION = 3.0
+PROJECT_VERSION = 3.0.0
 
 DEPS = jsx gproc gen_rpc ekka esockd cowboy clique
 

src/emqx.app.src

@@ -1,6 +1,6 @@
 {application,emqx,
              [{description,"EMQ X Broker"},
-              {vsn,"3.0-rc.4"},
+              {vsn,"3.0.0"},
               {modules,[]},
               {registered,[emqx_sup]},
               {applications,[kernel,stdlib,jsx,gproc,gen_rpc,esockd,