add version#, send apid version# in PluginsInitializedEvent

version/version.go

diff --git a/version/version.go b/version/version.go
new file mode 100644
index 0000000..c129b0a
--- /dev/null
+++ b/version/version.go
@@ -0,0 +1,4 @@
+package version
+const (
+	VERSION_NUMBER = "0.0.23"
+)