~samwhited/xmpp

ref: 24885296fb8321a12f73b5ada7c9c6d1271f2c22 xmpp/session_test.go -rw-r--r-- 1.5 KiB
Add missing copyright comment
Send IDs for presences and messages too

Only send IDs if one isn't already set (for all stanzas)
Test to make sure we don't accidentally mutate stanzas
Add partial Send() function