Slides for different change workflows talk

Change-Id: I91e8ae83a8e0b401a1c20e521937c8f7dee2e721
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 # Different change workflows in Gerrit
 In Release 2.3 (2012) draft changes and draft patch set workflow
 was added to Gerrit. This implementation extended change status with
 DRAFT value. DRAFT status in change occurs before NEW and will be for
@@ -27,4 +29,4 @@
 draft changes and draft patch sets. We will also look at possible improvements
 of new WIP workflow.
-*[David Ostrovsky, Gerrit Maintainer](../*
\ No newline at end of file
+*[David Ostrovsky, Gerrit Maintainer](../*